fix notifications too
Ensure following for all commented tickets
Extract ToggleHiddenButton from CommentForm

and use it on individual comments too
WIP: Add toggle hidden status API

missing tests
Add test for preview comments
fix import.js
Fix hidden comments test
renamed:    components/Views.js -> components/ViewTabContent.js
Move ticket data to TicketStore
Implement visibility toggle
Add setImmediate polyfill for browsers
Use TicketStore in Handler&Tag editors
WIP: Merge status badge and toggle