Merge pull request #7867 from gtorodelvalle/dialer-bug-835329-localization-not-loading-in-attention-screen

Bug 835329 - [DIALER] Timer is not appearing during an outgoing call (r=@etiennesegonzac)(cherry picked from commit 345162a971bf3f162a9f8a2da5c51407ce323dff)
Merge pull request #7946 from acperez/preloaded-contacts

Bug 835345 - Preloaded contacts for carriers during build time(cherry picked from commit 3f6f48dbe8b7437ea3f8f476a1168f251ae2aa93)
Merge pull request #7833 from stripTM/master

Fix missing punctuation mark in welcome screen, r=kaze(cherry picked from commit cb0a23213e3f5ee9e62174595cd0cd6b20d66b6f)