Additional interface settings

[mehtank]

I made a few configurable settings based on some UX feedback that I've gotten; see branch : https://github.com/mehtank/comingle/tree/settings

Currently I've added them as settings in Config.coffee, but it probably makes more sense to have them be selectable per meeting, perhaps via widgets on the landing page before clicking the "Create New Meeting" button, then stored in the meeting object? Or do you have thoughts on how to do that? I'm still slowly learning meteor and coffeescript, so making such deeper changes gets pretty slow for me.

• hideWarnings : Silently ignore browser compatibility issues with jitsi
• hideHeader : Don't show the main comingle link or the Meeting Title text box
• hideOpenRooms : Don't create a separate section in the RoomList for backgrounded rooms that you're in so the room list stays the same as you move around
• defaultSwitchRoom : Flip room selection interaction so that Shift-click opens the button menu and regular click automatically switches to the room
• singleRoom : Don't do backgrounded rooms--leave old room as soon as you enter new room
• preferCompact : Tighter cards in the room list (helps with Dealing with lots of rooms #20)

If they're false or not set, then the behavior should be exactly as it currently is.

[edemaine]

Some decisions/plans from today's meeting:

• hideOpenRoom should probably always be on (open rooms should never be separated), but replaced by a toggle for separating starred rooms (Starring rooms #140)
• singleRoom should always be on, once we remove background join (Starring rooms #140)
• defaultSwitchRoom: propose renaming to quickJoin, and make a Settings toggle
• Compact mode looks nice, and should be user Settings toggle; should probably also make default view a bit more compact (more medium). Maybe also incorporates hideHeader in some form...

[mehtank]

Created a new PR #158 to handle the various compact mode options as user toggleable settings (and configurable by default in Config.coffee). I may have gotten a bit carried away in terms of what you can hide, but you can now turn most everything off if you have a particularly small screen.

As an aside, the options in Config.coffee are at server-level, but it might make sense to have a corresponding set of settings at a meeting level? That is, some for meetings on a server, it may make sense to have the create room widget hidden by default, but other meetings it might want to start out visible.

[mehtank]

Also added quickjoin to #158