Add Contextual Help to Configuration page
Make the icon path relative
The key file is deleted properly (fix #55)

The key file is not deleted if it's defined by `GIT_KEY_FILE`
Update serbian translation (fix #53)
Make the resource type more specific
Fix Menu Bubble
Update to 0.5.1-beta version
Merge branch 'master' into develop

Conflicts:
	gitium/gitium.php
Merge pull request #56 from PressLabs/develop

Update to `0.5.1-beta` version