Fixes issues with following blogs

Use BOOLs not NSNumbers when assigning values
Adds calls to the /read/follows/mine/ endpoints for feedbag sites.
Merge branch 'develop' of github.com:wordpress-mobile/WordPress-iOS into issues/1682-follow-for-dotorg
Add missing super calls.
Fixes display issues with the like button.

Use BOOLs and not NSNumbers.
Switch from CALayer to UIView for count bubble to fix issues related to animation.
Set needsLayout when buttons are updated.
Merge pull request #1739 from SergioEstevao/issues/1738-Missing-Super-Calls

Add missing super calls.
Merge pull request #1741 from wordpress-mobile/issues/1682-follow-for-dotorg

Issues/1682 follow for dotorg
Merge pull request #1740 from wordpress-mobile/issues/1723-like-highlight

Fixes display issues with the like button.