change some function styles to make them more readable
Fix display of inlines images
Move message by drag and dropping it
Some server tasks were never acknoledged
Add a displayPreview Setting
More keyboard navigation
Add a compact list style
Allow action button in frontend notifications
Add UI for undeleting messages
Fix strange regression in account creation
Minor style fixes
Folder drop target
[Refactoring] remove all promises
[Refacto] remove unused utils/model.cofffee
Merge remote-tracking branch 'brice/master' into refacto/no-promise

Conflicts:
	server/controllers/messages.coffee
	server/models/settings.coffee
Remove forgotten logging
[bugfix] next link was broken
[bugfix] next link was broken
[bugfix] error handling in pool
Clean up settings management & test it