Add script for comparing compiled CSS
Fix 'Basics of HTML' broken link

The original link pointing to the Opera dev website was broken as the
document has been moved to the Webplatform site instead.

This commit fixes the link accordingly (reverts d8b7b8042c5 which removed
it entirely).
Sync heading submenu border with text color
Merge pull request #2633 from openjck/compare-compiled-css

Add script for comparing compiled CSS
Fix Bug #1047512 - warn beta testers of email

Added language next to beta-tester check box on profile button to warn users we send the occasional email.
Merge pull request #2649 from stephaniehobson/1047512-beta-testers-email-warning

Fix Bug #1047512 - warn beta testers of email
Merge pull request #2624 from darkwing/header-border-color

Sync heading submenu border with text color
fix bug 1050991 - Add icons to all notifications
fix bug 1049958 - Remove cursor pointer from login widget
fix bug 1050971 - Ensure login widget stays open for keyboard
fix bug 1050536 - Set min-width for login buttons
Merge pull request #2652 from darkwing/1049958-cursor

fix bug 1049958 - Remove cursor pointer from login widget
Make sure we're handling empty email address data properly when populating the signup form choices. Fixes bug #1051782.
Merge remote-tracking branch 'darkwing/1050991-notifications'
Improved the account disconnection error message to look like a real error notification. Refs bug #1050008.
Merge remote-tracking branch 'darkwing/1050971-login'

Conflicts:
	media/redesign/stylus/main/structure.styl
Merge remote-tracking branch 'darkwing/login-links'
Merge pull request #2645 from vrubiolo/master

Fix 'Basics of HTML' broken link
fix bug 1051019 - Make inputs more responsive
fix bug 1050499 - Add icons for accounts