Improve mobile readability by putting whitespace between messages, not lines

This generally removes a lot of whitespace on mobile while still improving readability
In particular, it makes it easier to see which lines belong together
Double-tap escape to disconnect
Highlight user when clicking their nick
Merge pull request #256 from lorenzhs/doubletap

Double-tap escape to disconnect
Merge pull request #255 from lorenzhs/lineheight

Improve mobile readability by putting whitespace between messages, not lines
Merge pull request #257 from lorenzhs/nickclick

Highlight user when clicking their nick
Use local files (with bower)

copied to 3rdparties manually so that we don't have bower_modules in the app
add cordova, hide splash screen when loaded
Vibrate on notification (cordova)

Also don't expect Notification to exist, mobile Chrome doesn't know it
Clarify purpose of the branch
Show cordova local notifications instead of just vibrating

This is really cool :D
Autocancel notifications
Update landing page text for app

Replaces mentions of 'browser' with 'app', remove installation instructions,
change encryption instructions to reflect situation in the app
Update texts
remove favico

doesn't make much sense in an app...
Remove sound notification. This is the platform's job in an app.
disable travis email notifications