Fix galleria loading
Merge pull request #952 from nlegoff/fix_deps

[3.9] Fix jquery-galleria display in homepage
Fix grunt usage. It needs to be at Phraseanet root to work correctly as local npm package
Merge pull request #953 from romainneutron/fix-grunt-driver

[3.9] Fix grunt usage. It needs to be at Phraseanet root to work correctly as local npm package
Add dependency on Ratchet and react ZMQ
Add check on libevent for production
Remove signal listener once a signal has been caught
Add task manager broadcaster subscriber
Minimal fix for callback declaration
Add Websocket server
Add WebsocketServer command
Add patch to version 3.9.0-alpha.11
Bump to version 3.9.0-alpha.11
Add useful infos in session storage
Add authorization strategy for WAMP topics
Address PR comments