Removed untranslated strings from messages
Created empty message file for English translations
Converted first bunch of translations to keybased ids
Output translations in nested format
Page CKEkeditor browse server => keybased translations
Page edit file => keybased translations
Page edit locale => keybased translations
Page login => keybased translations
Page edit users => keybased translations
visual improvements to extend page for installed extensions
Merge remote-tracking branch 'upstream/master' into boltcamp-three-extend
some comments and cleanup
Page dashboard => keybased translations
Merge pull request #1898 from jadwigo/boltcamp-three-extend

update extend screen with tags and icons
Herp Derp.
Minor tweak to Templatechooser.
Update Bolt's composer autoloader to use PSR-4
Reducing red marks
Panel latest-activity => keybased translations
Why spaces?