add ActionBar-PullToRefresh library dependency
replace refresh action bar button by pull to refresh in the Reader
remove reader list progress bar
comment list, replace refresh button by pull to refresh
Merge branch 'develop' into issue/1013-replace-refresh-icon-by-pull-to-refresh
notifications list, replace refresh button by pull to refresh
stats, replace refresh button by pull to refresh
themes, replace refresh button by pull to refresh
media, replace refresh button by pull to refresh
manage blogs, replace refresh button by pull to refresh
change pull to refresh progress bar style
Merge branch 'develop' into issue/1013-replace-refresh-icon-by-pull-to-refresh

Conflicts:
	src/org/wordpress/android/ui/media/MediaBrowserActivity.java
pull to refresh on the reader empty views too
remove mShouldAnimateRefreshButton
add a custom PullToRefreshHeaderTransformer to test displaying a progress bar without header
fix PullToRefreshHeaderTransformer for pre ICS devices
Check for a network connection onRefreshStarted
add a workaround to fix: https://github.com/chrisbanes/ActionBar-PullToRefresh/issues/265
new PullToRefreshHelper to factorize some code
Merge branch 'develop' into issue/1013-replace-refresh-icon-by-pull-to-refresh

Conflicts:
	src/org/wordpress/android/ui/notifications/NotificationsActivity.java