Added extra logging of save/restore adapter state
Added IllegalStateException catch in adapter's restoreState()
Added comment explaining necessary of IllegalStateException try/catch
Removed end fragment
Added progress spinner when requesting more posts
Merge pull request #1973 from wordpress-mobile/issue/1899-reader-pager-illegalstate-331

issue/1899-reader-pager-illegalstate-331
Merge branch 'hotfix/3.3.1' into release/3.4

Conflicts:
	WordPress/src/main/java/org/wordpress/android/ui/reader/ReaderPostPagerActivity.java
Merge branch 'release/3.4' of github.com:wordpress-mobile/WordPress-Android into release/3.4