Prevents CoreData NSObjectInaccessibleException Crash
Adds extra logging while nuking Unused Media
Merge pull request #2123 from wordpress-mobile/issues/2122-clean-unused-media-crash

Prevents CoreData NSObjectInaccessibleException Crash
Blog: Normalizing Code Style. Part #1
Blog: Normalizing Code Style. Part #2
Blog: Nukes Reachability
WordPressAppDelegate: Adds missing import
PostPreviewViewController: Nukes Blog Reachability
Refreshing Notifications each time they become visible
Merge pull request #2127 from wordpress-mobile/issues/2087-timestamp-is-not-being-refreshed

Refreshing Notifications each time they become visible
Blog: Switching to isEqualToString
Merge pull request #2126 from wordpress-mobile/issues/1839-reachability-crash

Nukes Reachability from Blog class
Merge remote-tracking branch 'origin/release/4.2' into develop