Restructures the post editor to work around some memory issues.

Removes the UITableView. UITextView will handle the text sizing and scrolling on its own.
Title text field and options buttons are now subviews of the textView to retain the scroll behavior we want.
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Merge branch 'develop' of github.com:wordpress-mobile/WordPress-iOS into issues/1231-editor-memory

Conflicts:
	WordPress/Classes/EditPostViewController.m
Make tap to start label a subview of the textview
Correctly position label.
Update options button to show disclosure indicator.
Merge branch 'develop' of github.com:wordpress-mobile/WordPress-iOS into issues/1231-editor-memory

Conflicts:
	WordPress/Classes/EditPostViewController.h
Fix options cell sizing and highlight color for iPad.
Merge pull request #1240 from wordpress-mobile/issues/1231-editor-memory

Restructures the post editor to work around some memory issues.