add test to verify sending sms with attachments
fixup: assert attachment as well
fixup: changes according to code review
Merge pull request #1215 from bebef1987/master

xfail Bug 902878 - crash in mozalloc_abort(char const*)
Merge remote-tracking branch 'vaidik/sms_with_attachment'
Migrate messages app locators to By class
Merge pull request #1216 from bebef1987/import

fix import contacts
update travis CI to use b2g-26