Set FIRAuth preferred language code by default.

bump podspec versions

Change-Id: Ib8c92d50b10a02579d5a24ff8ecd96ad2e597b1e

fix build issue in FirebaseSampleUITests

Change-Id: I24cabeb47f6de0e755e7ffc29ee4ade7409c745f

Update FirebaseUI with FirebaseAuth 4.2.0 changes

Update Twitter SDK to 3.0Update Twitter SDK to 3.0

[FirebaseUI] Add localizations for swift sample

[FirebaseUI] Add localizations.

[FirebasePhoneAuth] Remove EAP podspec links.

Change-Id: I62cefcd3597517802c5d15c6dafe1e8a4adbabd5

[FirebasePhoneAuth] Remove EAP podspec links.

Change-Id: I62cefcd3597517802c5d15c6dafe1e8a4adbabd5

Merge pull request firebase#260 from morganchen12/datasource

expose FUIIndexArray's indexes in data sources