updated an image on the site
updated the fav icon
Fix #249
tweaked some styles
updated the Alpha Feedback modal here #179
Merge branch 'master' of github.com:mozilla/towtruck
Fixed the RTC audio popups on Chrome and Safari #236
updated some of the popup notifications

some were looking weird on chrome and safari
adjusting walkthrough.js
updated walkabout.js
Fix some HTML validation errors
Fix #196, make the incoming call button more prominent
starting to customize the Walkthrough modal
Merge branch 'master' into develop

Conflicts:
	app/http/public/towtruck.less
	app/http/public/towtruck/walkthrough.js
	app/http/views/towtruck/interface.html
I monstrously messed up and thought I'd sync'd develop with the latest from master. Here I'm reverting to the master copy of towtruck.less and i'll manually re-apply my changes.
Adding standard two-space indent.
Buttons are square (hence the long & short)
Doing calculations based on number of buttons.
Little simplification
Using button-size for background sizing too.

Adding the help button to the less file