Merge pull request #375 from maxailloud/master

Checking if curl available for facebook connect
fix terms of service bug
Merge pull request #376 from solispauwels/indexing

fix terms of service bug
Added check on curl response
Merge pull request #377 from stefk/curl-check

Added check on curl response
Raised timeout value for facebook connection
Merge pull request #378 from stefk/fb-timeout

Raised timeout value for facebook connection
Rewrited user ws code when deleting (closes claroline/Claroline#451)
Removed superfluous flush and corrected log dispatching
Merge pull request #379 from stefk/ws-soft-delete

Ws soft delete
Fixed fb validation
Merge pull request #380 from stefk/fb-fix

Fixed fb validation
Facebook connect button
Facebook connect button fix bug
Merge pull request #381 from solispauwels/indexing

Facebook connect button