Removes some iOS7 forking code that is no longer needed.

Refs #677
Progress on refreshing the editor UI.

Refs #677
Uses a UITableViewController for the base class.
Removes some obsolete code.
Removes old code related to autosaves that was disabled.
Removes the old full screen view. Still hides toolbars for the iPhone.
Uses toolbar from the UINavigationController instead of adding its own view.
Uses no xibs.
Merge branch 'develop' of github.com:wordpress-mobile/WordPress-iOS into issues/677-editor-refresh

Conflicts:
	WordPress/Classes/PostsViewController.m
Use fixed width instead of margin percentage.
'Tap here' label. Scroll cursor into view. Toolbar fix.

Position and show the 'tap here' label.
Make sure we keep the cursor visible as the user edits.
Hide the nav and toolbar for the title textField as well as the content textView.
Clean up some commented out code.
Merge branch 'develop' of github.com:wordpress-mobile/WordPress-iOS into issues/677-editor-refresh
Merge branch 'develop' of github.com:wordpress-mobile/WordPress-iOS into issues/677-editor-refresh

Conflicts:
	WordPress/Classes/PostsViewController.m
Use the updated format bar.
Scroll cursor into view when the keyboard opens.
Don't scroll when rotating unless the keyboard is visible.
Formatbar should always have a background color.
Remove comment marker.
Merge branch 'develop' of github.com:wordpress-mobile/WordPress-iOS into issues/677-editor-refresh

Conflicts:
	WordPress/WordPress.xcodeproj/project.pbxproj
Apply the blog picker to the new editor UI.
Grey and highlighted icons

TODO: use iOS keyboard grey background, e.g. #d3d6da, make sure heights
line up, and use highlighted images instead of tinting to improve
performance. cc @aerych
Switch back to the EditPostViewController
Moves new editor UI into EditPostViewController.

Removes obsolete xibs.
Restore constants clobbered in EditPostViewController changes
EditPageVC should use post and not apost.
Merge branch 'issues/677-editor-refresh' of github.com:wordpress-mobile/WordPress-iOS into issues/677-editor-refresh