Use new browser icons.
Rename icons; add chrome://extension page icon.
Merge branch 'dev' of https://github.com/uProxy/uproxy into lucyhe-update_ext_icons
Merge branch 'dev' of https://github.com/uProxy/uproxy into lucyhe-update_ext_icons
merge with dev
Update Chrome App icons.
Fix tests.
Rename logoutInUI + edit comments.
Add TODO as a suggestion for refactoring.
Merge remote-tracking branch 'origin/dev' into lucyhe-new_extension_icons
Merge pull request #610 from uProxy/lucyhe-new_extension_icons

Use new Chrome App & Extension icons.