Fix strange effects on attachments drag and drop.
Remove useless property on attachments drag and drop settings.
Fix wrong taskboard table height calculation (fix #981)

This not implies resizes on windows is resized.
Prepare gulpfile for production deployment.
Updated the favicon
Added loading to main pages
Fix edit us points problem
Fix bug #1001 - Not list all attachments when a wiki page is created
Fix edit us points problem (iteration 2)
Uncomment gulp-jade-inheritance.
An other minor change on gulpfile in an other attempt to fix it.
Add go-to-taskboard and go-to-us buttons on details
Merge branch 'go-to-taskboard'
Delete comments functionality
Merge branch 'delete-comments'
Add events service implementation.
Add taigaEvents module to app.
Fixup.
Refactor tgUsStatus directive (popover) for make it compatible for real time reload of backlog.
WIP: backlog controller realtime reload.