Merge pull request #74 from leibovic/localepref

Bug 1057634 - Use localized string for default search engine identifier. r=bnicholson
Bug 1061644 - Fall back to default engine if engine can't be found from pref. r=bnicholson
Merge pull request #76 from leibovic/crash

Bug 1061644 - Fall back to default engine if engine can't be found from pref. r=bnicholson
Bug 1060496 - Part 1: import stub LocaleManager.
Bug 1060496 - Part 2: import LocaleAware from Fennec.
Bug 1060496 - Part 3: make search activities locale-aware.
Bug 1060496: Support locale switching in search activity. r=margaret
Bug 1042960 - Create UI elements for facet bar