Pulled in latest WPLegacy* classes from editor pod
Added WPLegacyEditPostViewController
Added logic to determine if new editor should be used.
Updated editor pod.
Merge branch 'feature/editor-update' of github.com:wordpress-mobile/WordPress-iOS into feature/editor-update-126

# By Diego Rey Mendez (3) and Matt Bumgardner (1)
# Via Diego Rey Mendez
* 'feature/editor-update' of github.com:wordpress-mobile/WordPress-iOS:
  Added latest editor fixes.
  Recreated the pod project after my merge.
  Merged latest fixes to the toolbar.
  Format bar updates from editor pod.

Conflicts:
	Pods/Pods.xcodeproj/project.pbxproj
Pod update WordPress-iOS-Editor
Added settings option to turn on/off the visual editor
Merge pull request #2291 from wordpress-mobile/feature/editor-update-126

Only new mobile app users should see the new editor