Fix clicking the bear on mobile

closes #469
Merge pull request #475 from glowing-bear/fix-bear-click

Fix clicking the bear on mobile
Create dark theme by extracting theme settings from glowingbear.css

* Remove style.css as those values should be themable as well.
* Update urls in index.html to link to dark theme by default
Add light theme
light-theme: darken most colors by 50% and add it to theme manager
light theme: improve colours

* make the background lighter
* set highlight colour to something readable
* improve readability of default grey colours
* make default text color readable
* fix some base colours
style option control in light theme
fix gap between input and content
Fix bug with background color bleeding through
Merge pull request #434 from glowing-bear/design-light-theme

Design light theme
Make buttons unselectable

This improves copying and pasting quite a lot
Merge pull request #482 from glowing-bear/make-buttons-unselectable

Make buttons unselectable
Clarify purpose of the branch
Use local files (with bower)

copied to 3rdparties manually so that we don't have bower_modules in the app
Remove firefox app installation
remove favico

doesn't make much sense in an app...
add cordova, hide splash screen when loaded
Implement system notifications with cordova

Removes our manual sound notification, this is the platform's job in an app.
Also don't expect Notification to exist, mobile Chrome doesn't know it
Update landing page text for app

Replaces mentions of 'browser' with 'device', remove installation instructions,
change encryption instructions to reflect situation in the app
Add support for FirefoxOS