Fixing background color on create account screen.
Check that reblogging succeeded in success block.

Adds a failsafe to make sure reblogging was successful.
Replaces tabs with spaces.
Fix post settings photo popover position

Popover is now well centered after rotation
Removing incorrect analytics for sharing.

Was incorrectly flagging:
* Adding an item to Reading List.
* Copying an item's link.
* Opening an item in Safari.
Set post settings tableview as grouped
Code style
Pass around the NSManagedObjectID for a topic instead of an entity.
Convert tabs to spaces.
Let reader post detail and rebloging view controllers handle their own images.
Prime the share activity when its safe.

Avoid a visible performance hit later if scrolling.
Merge pull request #2005 from wordpress-mobile/issue/2004-fix-create-account-color

Fixing background color on create account screen.
Combining if statements as per @irbrad's suggestion.
Merge pull request #2011 from wordpress-mobile/issue/2010-remove-incorrect-sharing-tracking

Removing incorrect analytics for sharing.
Added Content-Security-Policy to the default preview HTML template
Updates no results view.

Shows "Fetching posts..." status and fixes an issue with the no posts message flickering briefly.
Do not sync reader if there is no account in the app.
Remove emoji image check.

Emoji needs to be handled via text replacement and not images.
Remove unnecessary size adjustment.

Retriving from the cache will take care of adjust the size (if needed).
Setting the height to 0 here will prevent `resizeImage:toSize` from succeeding.
better handles cells for Helpshift enabled status
Add support for using the Photon `fit` method.

Recycls existing photon URL with updated parameters.