Fix PR check on new branches (ampproject#5455)

Dont make sidebar mask diaplay:none by default. (ampproject#5365)

Fixes
Can't dismiss sidebar with click on main page content ampproject#5362

Fix borders on body after lightbox mode is enabled. (ampproject#5299)

Fix amp img lightbox (ampproject#5279)

* ImageViewer class does not inherit `loadPromise`

* add simple test

* bind the function passed in since it is an instance method

don't remove side effect dist --fortesting (treated as dev) (ampproje…

…ct#5202)

Snap to the correct slide on orientationChange. (ampproject#5120)

* Snap to the correct slide on orientationChange.

* Add tests

Rename ampdocFor to ampdocServiceFor (ampproject#5088)

Revert "Standalone Doc: Only allow VISIBLE and HIDDEN visibility state (

ampproject#4732)" (ampproject#5083)

This reverts commit 5240c6d.

Escape font family with single quotes for fontloader. (ampproject#5035)

InMobi Ad extension for AMP (ampproject#4886)

* InMobi ad for amp

* Made changes for renderStart and noContentAvailable for NFR

* Fixed indentations and minor doc changes