mms: Fix NPE when attaching slides

Issue: BACON-908

Change-Id: I7cc2fa975852cb08612849266529ee8aaf25b071
(cherry picked from commit 9e86a2a29292317213cd5836d91ef137ff2a8b86)
Generate Video Thumbnail

Use MediaMetadataRetriever to get generate thumbnail
(cherry picked from commit 2d767ff184a18636af29962eaace0713a558ff00)
add persian translate

add cm_strings to "value-fa"
enable supportsRtl

(cherry picked from commit 75515669cf570bc80036e1fb68528df18ff62143)

Conflicts:
	res/values-fa/cm_strings.xml