Fix two minor bugs (#340)

* Fix list default sortBy 'description'

This is a typo and results in sortBy errors.

* Time format error when editing activity

there is a bug in the time format while editing activity.
strtotime("9:0 AM"); output nothing. It lead the new date of activity to
00:00:00.

ajax/editActivity.php

@@ -80,7 +80,7 @@
 
 /* Convert formatted time to UNIX timestamp. */
 $time = strtotime(
-    sprintf('%s:%s %s', $activityHour, $activityMinute, $activityAMPM)
+    sprintf('%02d:%02d %s', $activityHour, $activityMinute, $activityAMPM)
 );
 
 /* Create MySQL date string w/ 24hr time (YYYY-MM-DD HH:MM:SS). */

modules/lists/dataGrids.php

@@ -42,7 +42,7 @@ public function __construct($siteID, $parameters, $misc)
     {
         /* Pager configuration. */
         $this->_tableWidth = new Width(100, '%');
-        $this->_defaultAlphabeticalSortBy = 'Description';
+        $this->_defaultAlphabeticalSortBy = 'description';
         $this->ajaxMode = false;
         $this->showExportCheckboxes = true; //BOXES WILL NOT APPEAR UNLESS SQL ROW exportID IS RETURNED!
         $this->showActionArea = true;