Change IBOutlets to weak

- For the ‘easy ones’

- Change the pattern of “init then add property” to “init with object”.

- WPAddCategoryVC property name change to get rid of ‘new’ reserved prefix
Clean up selection vcs

- WPSelectionVC and WPSegmentedSelectionVC look like they can be collapsed into one

- Weak references

- Don’t use initWithNibName

- Use properties
Merge branch 'develop' of github.com:wordpress-mobile/WordPress-iOS into issue/639-weak-views

In addition: EditPostViewController uses properties, more views to weak references, and some cleanup.

Related to #686 and #696

Conflicts:
	WordPress/Classes/EditPostViewController.m
	WordPress/Classes/EditPostViewController_Internal.h
	WordPress/Classes/MediaObjectViewController.m
Tweaked reader list typography
Made Reader detail typography match list view
Merge branch 'develop' into issue/744-reader-detail-fixes

Conflicts:
	WordPress/Classes/ReaderPostView.m
Allow featured images to be tapped
Fix avatar not showing in Reader detail view
Fix multiple controllers getting pushed
Cleaned up layout code to fix height resizing
#768 - fixed section title alignment in blog list
#768 - Rearranged blog list sections
Fixed section title placement in blog list on iPhone
#752 - fixed reader list shadows on iPad
Fixed blog list section title width to equal cell width
Merge pull request #770 from wordpress-mobile/issues/768-blog-list-improvements

#768 - blog list visual improvements
#774 - changed WPTableViewController table view style
Merge pull request #775 from wordpress-mobile/issues/774-tableview-section-headers

#774 - fixed floating title-less table view section headers
Merge pull request #773 from wordpress-mobile/issues/752-reader-ipad-shadows

#752 - fixed reader list shadows on iPad
Merge branch 'develop' of github.com:wordpress-mobile/WordPress-iOS into issue/639-weak-views

Conflicts:
	WordPress/Classes/EditPostViewController.m
	WordPress/Classes/NotificationsCommentDetailViewController.m
	WordPress/Classes/WPInfoView.h
	WordPress/Classes/WPInfoView.xib