Mark features as experimental

while we're fixing issues:

 - Keyboard shortcuts
 - Favcount
minor corrections for French locale
Merge pull request #1877 from frabrunelle/master

minor corrections for French locale
REFACTOR: Change `didInsertElement` to `on('didInsertElement')`
Use an `itemController` for topic lists. This will make bulk operations
easier.
Remove `console` from .jshintrc. If we need our app to log, use
`Ember.Logger` instead.
Trying again to merge changes to Chinese localizations done by Kelvin
FIX: when filling suggested topic list, don't try to add topics that have already been added, and topics that are category descriptions
Merge pull request #1879 from mcneel/master

Trying again to merge changes to Chinese localizations done by Kelvin
fixing some gutter link spacing that was bothering me
BUGFIXES: improved performance of import an export

we no longer generate the entire dump in memory, instead we generate one table at a time
added some basic progress
BUGFIX: avoid trasactions in test
Merge pull request #1880 from awesomerobot/master

fixing some gutter link spacing that was bothering me
BUGFIX: clicking on links to the same domain was broken
remplacer conversation par discussion (French locale)
BUGFIX: link to attachments when using S3
Merge pull request #1881 from frabrunelle/master

remplacer conversation par discussion (French locale)