Update RL modules to  use MobileFrontend styles

Squash of the following commits on master:
    04a1814 Fix line-height for page titles
    4350703 Re-use MobileFrontend content styles
    26dc1f3 Display locked pencil icon if page is protected
    2911558 Do not override MobileFrontend fonts
    a414ffa Re-use Link styles from MobileFrontend
    009e8e3 Hide edit buttons on the main page
    373540c Create separate iOS and Android bundles

Change-Id: Ifccb9cf711b1fd43a4d4dd954b70e65b7e526bd3