* Refactored Avatar and AvatarOverlay (DRY) to have 'account' as prop.
Also removed animate attribute from compose navigation bar, which should
have never been there. Added test for avatar overlay.
* fix broken tests
* god dammit another bug in tests! travis please let this pass
* formatting in avatar overlay
Use ES Class Fields & Static Properties (currently stage 2) for improve class outlook.
Added babel-plugin-transform-class-properties as a Babel plugin.