[#8] fix: read thumbnail from plugin instead from web

pom.xml

@@ -7,7 +7,7 @@
 	<modelVersion>4.0.0</modelVersion>
 	<groupId>org.ingomohr.jira</groupId>
 	<artifactId>jira-versions-gadget</artifactId>
-	<version>1.2-SNAPSHOT</version>
+	<version>1.1.1</version>
 
 	<name>jira-versions-gadget</name>
 	<packaging>atlassian-plugin</packaging>

src/main/resources/atlassian-plugin.xml

@@ -6,7 +6,7 @@
     <plugin-info>
         <description>Provides a dashboard gadget to show versions</description>
         <vendor name="Ingo Mohr" url="http://www.ingomohr.org"/>
-        <version>1.2</version>
+        <version>1.1.1</version>
     </plugin-info>
 
     <!--
@@ -15,11 +15,13 @@
         disable/enable the gadget.
      -->
     <gadget key="jira-versions-gadget" name="Versions Gadget" location="gadget.xml"/>
-
+    
     <!-- Makes the gadget Locale messages available for the gadget's use. -->
     <resource type="download" name="i18n/ALL_ALL.xml" location="i18n/ALL_ALL.xml">
         <param name="content-type" value="text/xml; charset=UTF-8"/>
     </resource>
+
+    <resource type="download" name="thumbnail.png" location="images/thumbnail.png"/>
 
     <!--
         Automatically finds all JAX-RS resource classes in the plugin and

src/main/resources/gadget.xml

@@ -5,7 +5,7 @@
     		author_email="[email protected]"
     		directory_title="__MSG_gadget.title__"
     		description="__MSG_gadget.description__"
-    		thumbnail="https://github.com/ingomohr/jira-versions-gadget/releases/download/1.0/gadget-thumbnail.png">
+    		thumbnail='#staticResourceUrl("org.ingomohr.jira.jira-versions-gadget:jira-versions-gadget-resources", "thumbnail.png")'
     		>
         <Optional feature="gadget-directory">
             <Param name="categories">