Bug 1102556: update .background-size mixin to accept multiple arguments
[fix bug 1106305] Specify What's New Variant For 35 Beta
Merge pull request #2558 from alexgibson/whatsnew-35-beta

[fix bug 1106305] Specify What's New Variant For 35 Beta
Fix bug 1106961 - Update donate links
Merge pull request #2560 from craigcook/bug-1106961-update-donate-links

Fix bug 1106961 - Update donate links
Bug 1106961 - Remove hash from donate URL
Merge pull request #2561 from craigcook/master

Bug 1106961 - Remove hash from donate URL
Merge pull request #2556 from raebex/bug-1102556-update-.background-size-mixin

Bug 1102556: update .background-size mixin to accept multiple arguments