Bug 881248 - [MMS] Multirecipient. A contact with >1 number must only render the relevant number (vs. rendering all) r=julienw

Signed-off-by: Rick Waldron <waldron.rick@gmail.com>
(cherry picked from commit 6406b9a535b5fcd7143a6ccb58c03a3a7b4296c5)

Conflicts:
	apps/sms/test/unit/mock_utils.js
Bug 840038 - [MMS][User Story] Image rescaling to 300kB(Apply to composer attachment) - r=gnarf

Adds resizing step in Composer
Adds a resizing notification
Adds Composer.isResizing
Only show file too large error when not an image
Refactors getting mmsSizeLimitation
Defaults to 300k for mmsSizeLimitation
Adds "resize-image" locale string
Adds number: 1 to pick action

Closes gh-9854
(cherry picked from commit dea31788f6da0abcd9e6d83f7dbf26b89c6f8063)

Conflicts:
	apps/sms/manifest.webapp