Update fr.coffee
User password hash test accepts production or development salt for convenience.
No multiplayer in game-menu for non-ladder levels

This is a point fix to prevent single player level sessions from
setting multiplayer=true, which results in a bus.connect() in
playlevelview, which can result in a Firebase blocking error.
Temporarily turning off achievement popups in IE and synchronous multiplayer sessions in PlayLevelView for non-admins due to bugginess.
Merge pull request #1913 from Rubiconline/patch-4

Update fr.coffee
Merge branch 'master' into production