Merge pull request #7902 from samjoch/bug-819062

Bug 819062-824626 - [Video List] Not Implemented to Spec in both orientations, Distorted thumbnail(cherry picked from commit 1f189d24ff84a126df2223fb1139549e60d1c09b)
Merge pull request #7989 from crdlc/bug-808246

Bug 808246 - The date/time does not show well with pale wallpapers on th...(cherry picked from commit 4c9b19becc40e43ee84e6db60f0bc59df58ee5ee)
Bug 838976: Give Template a background and make it occupy the full viewport. r=vingtetun a=vingtetun
(cherry picked from commit 5b1818cda3577275834aa8d906c0c6dcc511d9f3)