Bug 879420 - Prevent default on form submit
Merge pull request #10218 from KevinGrandon/bug_879420_calendar_enter_button

Bug 879420 - Prevent default on form submit
Bug 870902 - [MMS] [UX] Compose: Contacts suggestions has a wrong font. Should be the one designed for our OS. - r=gnarf

Closes gh-10027
Bug 879411 - [Messages] Tapping <delete>/<backspace> removes the recipient to the left of cursor

Signed-off-by: Rick Waldron <waldron.rick@gmail.com>