Load plugin code files by order of appearance.

- old behaviour: file name length
- added test for plugin discovery
Made keybinding 'S' select a 'target' in a search view... seems buggy, but might just be my keyboard about to break
Added update UI to Select Target action
Added some generated styles to CSS
Refactored modal Tag picker quite a bit
Moved & imrpoved Modal tag picker JS logic & rendering
Added Encrypted icons to search items for encrypted results
Added 'Thread Notification' styles
Added 'Message moved to new thread' JS + UI feedback
Merge pull request #762 from ulikoehler/routes-none

Don't display 'None' for unset fields in the add route dialog
Made nice_subject() ext. handle the 'No Subject' logic
Fixed pagination CSS
Updated GPG signed color in Composer JS
Made Compose crypto tooltips into funcs that get called on click to reinstantiate
Fixed Contact Add JS modal
Fixed silly lil bugs with search & contact views
Updated Missingkey crypto UI feedback & words
Added Archive button to Message in thread view
Bumping version to 0.2.0
Add an undelimited rfc2822 style format for encrypte data (issue #697)