Fix #300 by checking if the activity is in FG before displaying the alert about Jetpack needed.
Fix #305 by replacing Fragments with new "fresh" Fragments when switching between blogs.
Added a missing "commit" on fragments
Merge pull request #306 from wordpress-mobile/issue-305

Fix for#305 (Stats should clear out when switching blogs)
Code style update.
Merge pull request #301 from wordpress-mobile/issue-300

Fix #300 by checking if the activity is in FG before displaying the alert about Jetpack needed.
Merge remote-tracking branch 'origin/release/2.5.1' into issue-308

Tablets and small screens aren't handled differently

Conflicts:
	src/org/wordpress/android/ui/stats/StatsActivity.java