* add basic party loading message code; doesn't work yet
* fixup party loading messages, remove rpg-style messages
* move party-loading messages back into groups.json
* party-loading message logic returns a string instead of a number
* feat(realtime-chat): add Pusher library to the server
* feat(realtime-chat): only for private groups
* feat(realtime-chat): add authentication endpoint for Pusher
* feat(realtime-chat): client proof of concept
* fix typo in apidoc
* feat(realtime-chat): redo authentication and write integration tests
* remove firebase code
* fix client side tests
* fix line ending in bower.json
* feat(realtime chat): use presence channels for parties, send events & disconnect clients if user leaves or is removed from party, automatically update UI
* pusher: enable all events in the background
* fix pusher integration tests
* Fix display of add challenge message when group challenges are empty
* Fixed forced quest start to update quest without reload
* Fixed needing to reload when accepting party invite
* Fix group leave and join reload
* Fixed leave current party and join another
* Updated party tests