add a new key--"title" to calendar.json

fix control structure not allowed in <trans...> sections error

change from "Holiday" to "holidays"

re-introduce trans tag
Fix Bug 1069663 - mozilla.org treats Ubuntu on ARM as Android
Bug 1102556: update .background-size mixin to accept multiple arguments
Bug 1103870 - Enable contribute form for sv-SE
Fix Bug 1106846 - ESR Page links to 34 Relnotes
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
This might come in handy...
Merge pull request #2559 from kyoshino/bug-1106846-esr-relnotes

Fix Bug 1106846 - ESR Page links to 34 Relnotes
Merge pull request #2300 from kyoshino/bug-1069663-arm-linux

Fix Bug 1069663 - mozilla.org treats Ubuntu on ARM as Android
Merge pull request #2562 from sgarrity/happy-easter

Class for the first day of the first month of the second quarter
Merge pull request #2538 from infinet/bug-1096196-holiday-calendar-title

Bug 1096196 holiday calendar title
Merge pull request #2557 from flodolo/bug1103870_svSE

Bug 1103870 - Enable contribute form for sv-SE
Add Costa Rica avail for Alcatel OTF C. Bug 1107572.
Merge pull request #2565 from jpetto/bug-1107572-alcatel-otfc-costa-rica

Add Costa Rica avail for Alcatel OTF C. Bug 1107572.