diff --git a/README.md b/README.md
index a32494f9..30c1e12f 100644
--- a/README.md
+++ b/README.md
@@ -15,7 +15,7 @@ Several solutions exist to handle offline mobile data collection. While this typ
 
 **Dokomo strives to simplify the process by integrating the elements of a data collection effort into a unified system, from creation of mobile-ready surveys to quick analysis and visualization of the collected data.**
 
-The latest install script is here: https://raw.githubusercontent.com/SEL-Columbia/dokomoforms/v0.2.7/installer.sh
+The latest install script is here: https://raw.githubusercontent.com/SEL-Columbia/dokomoforms/v0.2.8/installer.sh
 
 ## Features
 
diff --git a/docker-compose.yml b/docker-compose.yml
index 98ad5f91..f976fdb4 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -10,7 +10,7 @@ nginx:
     - /etc/letsencrypt:/etc/letsencrypt
     - /tmp:/tmp
 webapp:
-  image: "selcolumbia/dokomoforms:0.2.7"
+  image: "selcolumbia/dokomoforms:0.2.8"
   command: bash -c "./docker-wait-for-postgres.sh db && head -c 24 /dev/urandom > cookie_secret && python webapp.py"
   links:
     - "db:db"
diff --git a/dokomoforms/handlers/util.py b/dokomoforms/handlers/util.py
index 2b8b9d90..c959fde1 100644
--- a/dokomoforms/handlers/util.py
+++ b/dokomoforms/handlers/util.py
@@ -85,10 +85,13 @@ def user_survey_language(self, survey):
         """Return the logged-in User's selected language
         for the given survey, or None if they do not have one."""
         user = self.current_user_model
-        if (user
-                and survey.id in user.preferences
-                and 'display_language' in user.preferences[survey.id]):
+        if user is None:
+            return None
+        try:
             return user.preferences[survey.id]['display_language']
+        except KeyError:
+            # preference has not been set
+            pass
         return None
 
     def set_default_headers(self):
@@ -107,6 +110,7 @@ def set_default_headers(self):
             " cdn.leafletjs.com code.highcharts.com"
             " momentjs.com cdn.datatables.net https://login.persona.org; "
             "child-src login.persona.org; "
+            "frame-src login.persona.org; "
             "style-src 'self' 'unsafe-inline'"
             " fonts.googleapis.com cdn.leafletjs.com *.cloudfront.net;"
             "font-src 'self' fonts.googleapis.com fonts.gstatic.com;"
diff --git a/dokomoforms/static/manifest.json b/dokomoforms/static/manifest.json
new file mode 100644
index 00000000..ffd58b69
--- /dev/null
+++ b/dokomoforms/static/manifest.json
@@ -0,0 +1,15 @@
+{
+  "name": "Dokomo Forms",
+  "short_name": "Dokomo Forms",
+  "start_url": "/enumerate/",
+  "scope": "/enumerate/",
+  "display": "standalone",
+  "icons": [
+    {
+      "src": "/static/dist/admin/img/favicon.png",
+      "sizes": "196x196",
+      "type": "image/png"
+    }
+  ],
+  "lang": "en-US"
+}
diff --git a/dokomoforms/static/src/admin/js/account-overview.js b/dokomoforms/static/src/admin/js/account-overview.js
index cd297f67..dc890fdf 100644
--- a/dokomoforms/static/src/admin/js/account-overview.js
+++ b/dokomoforms/static/src/admin/js/account-overview.js
@@ -88,7 +88,7 @@ var AccountOverview = (function() {
                         zoom: 14,
                         attributionControl: false
                     });
-                    L.tileLayer('http://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png', {}).addTo(map);
+                    L.tileLayer('https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png', {}).addTo(map);
                     var markers = [];
                     _.each(submissions, function(submission) {
                         console.log(submission);
diff --git a/dokomoforms/static/src/common/js/service-worker.js b/dokomoforms/static/src/common/js/service-worker.js
new file mode 100644
index 00000000..3b5481af
--- /dev/null
+++ b/dokomoforms/static/src/common/js/service-worker.js
@@ -0,0 +1 @@
+// Nothing to see here
diff --git a/dokomoforms/templates/base.html b/dokomoforms/templates/base.html
index e201c0dc..ed7e7db8 100644
--- a/dokomoforms/templates/base.html
+++ b/dokomoforms/templates/base.html
@@ -16,6 +16,7 @@
     <link href="/static/dist/admin/css/admin.css" rel="stylesheet" type="text/css">
 
     <link rel="icon" href="/static/dist/admin/img/favicon.png">
+    <link rel="manifest" href="/static/manifest.json">
 
     <title>{{ options.organization }} Surveys -- Powered by DokomoData</title>
 </head>
diff --git a/dokomoforms/templates/view_enumerate.html b/dokomoforms/templates/view_enumerate.html
index af632608..06282f59 100644
--- a/dokomoforms/templates/view_enumerate.html
+++ b/dokomoforms/templates/view_enumerate.html
@@ -17,6 +17,21 @@
 
         <link href='https://fonts.googleapis.com/css?family=Roboto:400,300,500,700,100' rel='stylesheet' type='text/css'>
         <link rel="icon" href="/static/dist/survey/img/favicon.png">
+	<link rel="manifest" href="/static/manifest.json">
+	<script>
+            // From https://github.com/GoogleChrome/samples/blob/cbc8098c3ebda4dda0ff894673d3847eae31648f/app-install-banner/basic-banner/index.html
+            window.addEventListener('load', function() {
+                if ('serviceWorker' in navigator) {
+                    navigator.serviceWorker.register('/static/src/common/js/service-worker.js', { scope: '/static/src/common/js/' })
+                    .then(function(r) {
+                        console.log('registered service worker');
+                    })
+                    .catch(function(error) {
+                        console.error(error);
+                    });
+                };
+            });
+	</script>
     </head>
 
     <body>
diff --git a/dokomoforms/templates/view_visualize.html b/dokomoforms/templates/view_visualize.html
index 5ce0e41e..a408d0a1 100644
--- a/dokomoforms/templates/view_visualize.html
+++ b/dokomoforms/templates/view_visualize.html
@@ -25,7 +25,7 @@ <h4>Welcome {{ current_user }}</h4>
     <script src="/static/lib.js"></script>
     <script src="https://login.persona.org/include.js"></script>
     <script src="/static/persona.js"></script>
-    <script src="http://d3js.org/d3.v3.js"></script>
+    <script src="https://d3js.org/d3.v3.js"></script>
     <script src="/static/visualizations.js"></script>
     {% if time_data %}
     <script>
diff --git a/installer.sh b/installer.sh
index 67d59923..e5329e26 100755
--- a/installer.sh
+++ b/installer.sh
@@ -1,5 +1,5 @@
 #!/usr/bin/env sh
-# Dokomo Forms installer for version 0.2.7
+# Dokomo Forms installer for version 0.2.8
 set -e
 
 # Do you have docker installed?
@@ -105,8 +105,8 @@ $SUDO openssl dhparam -out /etc/letsencrypt/live/$LETSENCRYPT_DIR/dhparam.pem 20
 printf "========================================\n"
 printf " Downloading configuration files        \n"
 printf "========================================\n"
-$CURL -L https://raw.githubusercontent.com/SEL-Columbia/dokomoforms/v0.2.7/docker-compose.yml > docker-compose.yml
-$CURL -L https://raw.githubusercontent.com/SEL-Columbia/dokomoforms/v0.2.7/nginx.conf > nginx.conf
+$CURL -L https://raw.githubusercontent.com/SEL-Columbia/dokomoforms/v0.2.8/docker-compose.yml > docker-compose.yml
+$CURL -L https://raw.githubusercontent.com/SEL-Columbia/dokomoforms/v0.2.8/nginx.conf > nginx.conf
 
 # Edit the configuration files
 printf "========================================\n"
diff --git a/tests/python/branch-heaven-fixture.py b/tests/python/branch-heaven-fixture.py
index 9b6aa574..1abe2ae7 100755
--- a/tests/python/branch-heaven-fixture.py
+++ b/tests/python/branch-heaven-fixture.py
@@ -182,25 +182,25 @@
                     models.construct_bucket(
                         bucket_type='multiple_choice',
                         bucket=node.choices[1],
-                        ),
-                    ],
+                    ),
+                ],
 
                 nodes=[
                     models.construct_survey_node(
                         node=models.construct_node(
                             title={'English': 'mc text sub 1'},
                             type_constraint='text',
-                            ),
                         ),
+                    ),
                     models.construct_survey_node(
                         node=models.construct_node(
                             title={'English': 'mc text sub 2'},
                             type_constraint='text',
-                            ),
                         ),
-                    ]
-                )
-            ]
+                    ),
+                ]
+            )
+        ]
     ))
 
     survey.nodes.append(models.construct_survey_node(
diff --git a/tests/python/test_selenium.py b/tests/python/test_selenium.py
index 7ed9f785..fcae1ab7 100644
--- a/tests/python/test_selenium.py
+++ b/tests/python/test_selenium.py
@@ -1104,7 +1104,15 @@ def test_url_slug_collision(self):
                 .get_attribute('class')
             )
         )
-        self.click(self.drv.find_element_by_class_name('save-survey-url'))
+        try:
+            self.click(self.drv.find_element_by_class_name('save-survey-url'))
+        except (WebDriverException, ValueError):
+            # Catch ValueError due to
+            # https://github.com/SeleniumHQ/selenium/issues/1470
+            #
+            # Certain browsers complain when you try to click something that's
+            # not clickable.
+            pass
 
         self.get('/enumerate/slug')
         self.assertEqual(
@@ -1430,6 +1438,7 @@ def test_logout(self):
         # clicking logout should refresh the page
         self.wait_for_element('menu', By.CLASS_NAME)
         self.click(self.drv.find_element_by_class_name('menu'))
+        self.sleep()
         self.click(
             self.drv
             .find_element_by_class_name('menu_logout')
@@ -4073,7 +4082,8 @@ def test_add_new_facility(self):
         self.sleep()
         self.wait_for_element(
             '.btn-add-facility',
-            by=By.CSS_SELECTOR
+            by=By.CSS_SELECTOR,
+            timeout=10,
         )
         # click add button
         self.click(
diff --git a/tox.ini b/tox.ini
index d8db2af6..43da5b81 100644
--- a/tox.ini
+++ b/tox.ini
@@ -63,4 +63,5 @@ deps=
     restructuredtext-lint
 
 [flake8]
+ignore=E402,E731
 exclude=docs,node_modules
diff --git a/webapp.py b/webapp.py
index 00b3b99c..f3ce0687 100755
--- a/webapp.py
+++ b/webapp.py
@@ -139,6 +139,16 @@ def __init__(self, session=None, options=options):
 
         sur = SurveyResource
 
+        settings = {
+            'template_path': os.path.join(_pwd, 'dokomoforms', 'templates'),
+            'static_path': os.path.join(_pwd, 'dokomoforms', 'static'),
+            'default_handler_class': handlers.NotFound,
+            'xsrf_cookies': True,
+            'cookie_secret': get_cookie_secret(),
+            'login_url': '/',
+            'debug': options.debug,
+        }
+
         urls = [
             # Administrative
             url(r'/', handlers.Index, name='index'),
@@ -252,16 +262,6 @@ def __init__(self, session=None, options=options):
             ),
         ]
 
-        settings = {
-            'template_path': os.path.join(_pwd, 'dokomoforms/templates'),
-            'static_path': os.path.join(_pwd, 'dokomoforms/static'),
-            'default_handler_class': handlers.NotFound,
-            'xsrf_cookies': True,
-            'cookie_secret': get_cookie_secret(),
-            'login_url': '/',
-            'debug': options.debug,
-        }
-
         # HTTPS
         if options.https:
             settings['xsrf_cookie_kwargs'] = {'secure': True}