Merge pull request #6 from sole/bug-881224-ui-improvements

Bug 881224 ui improvements
changing the black to hex

I'm just testing to see if i I can do a PR
Adding the favicon and the 512x512 icon
updating the favicons
update gitignore to actually ignore .DS_Store tat
New retinifyed icon and huge 512px icon for the home screen etc
Merge branch 'master' into bug-881232-non-gum-fallback