fix #2036: check if the fragment is added
Merge pull request #2060 from wordpress-mobile/issue/2036-ise-showusernameerror

fix #2036: check if the fragment is added
Reduced drawer divider margin and header size
List position is now restored upon rotation
Merge pull request #2064 from wordpress-mobile/issue/2062-drawer-scrolling

issue/2062-drawer-scrolling
Merge pull request #2065 from wordpress-mobile/issue/2063-reader-restore-position

issue/2063-reader-restore-position
Fix NPE in ReaderCommentList.onDestroy()
Check for null updatedPost after toggling like
Added same null check to CommentDetailFragment & ViewPostFragment
Merge pull request #2070 from wordpress-mobile/issue/2067-reader-comments-ondestroy-npe

issue/2067-reader-comments-ondestroy-npe
Merge pull request #2071 from wordpress-mobile/issue/2068-reader-post-like-npe

issue/2068-reader-post-like-npe
Removed quick video from the drawer
Tweaked drawer margins now that there's more room
fix #2072: replace the call to getBestDateTimePattern
use the spinner date picker for API >= 21 (because the new mode doesn't fork correctly inside a ScrollView)
Merge pull request #2075 from wordpress-mobile/issue/2072-alternative-to-getBestDateTimePattern

fix #2072 alternative to get best date time pattern
Use a circular shape drawable as the background of the moderating progress view.

Fixes #2078
Merge pull request #2079 from wordpress-mobile/issue/2078-notifications-rounded-progress

Use a circular shape drawable as the background of the moderating progress view
Increased drawer text size to better match the rest of the app
Created FAB widget with pre-L shadow