Bug 1035762 - [B2G][SMS] support 24 hour time format. r=schung

For all the 24h format related test cases: How about wrapped with in the suite, set messageOpts  and view id in setup and run 2 tests in forEach(Or you could sync what yo did in localization helper test, both fine for me)? It could be easier to understand the error if the error is related to specific time format and only failed in one of the test.