fix #1789: remove call to invalidate in onScroll callback
Merge pull request #1792 from wordpress-mobile/issue/1789-npe-wpaction-bar

fix #1789: remove call to invalidate in onScroll callback
Changed getResources() to context.getResources() to avoid IllegalStateException accessing resources before fragment has been added
Merge pull request #1793 from wordpress-mobile/issue/1790-illegalstate-reader-detail

issue/1790-illegalstate-reader-detail
First pass at getting rid of WordPress.getCurrentBlog in Stats
Do not use currentBlog when opening Stats from Notifications.
Re-add a comment that was previously removed by chance
Add NPE check to getBlogStatsCredentials
Just added another Null Pointer check.
Make sure blog_id passed to Stats activity is valid and the blog available in the app
Better error message
3.1 version bump
EOL issue on gradlew
minor tools/release-checks.sh fixes
strings update
Add few NPE checks
Define one single constant ARGS_LOCAL_TABLE_BLOG_ID in StatsActivity and use it in fragments.
Merge branch 'release/3.1' into develop

Conflicts:
	WordPress/src/main/java/org/wordpress/android/ui/reader/ReaderPostDetailFragment.java
Merge pull request #1801 from wordpress-mobile/issue/1787-get-rid-currentblog-stats

Get rid of WordPress.getCurrentBlog calls in Stats
Merge branch 'develop' of https://github.com/wordpress-mobile/WordPress-Android into feature/1795-reader-render-attachments