Updated podfile to pull in editor fix; added...

...array to track ids of all media currently in process of being inserted into a post.
Added a WPUploadStatusButton with new uploading text
Dialog box text update for cancelling media in the new editor.
Merge branch 'release/4.6' of github.com:wordpress-mobile/WordPress-iOS into issue/editor-344-bad-image-upload

# By Sérgio Estêvão
# Via Sérgio Estêvão
* 'release/4.6' of github.com:wordpress-mobile/WordPress-iOS:
  Remove commented out check.
  Fix code style issues.
  Refactor class names and improved documentation.
  Add localisation description to help translators.
  Move comment to the right line.
  Code style issues.
  Check for error instead of no media and add documentation explaining the semantics of completion block.
  Code layout fix.
  While uploading feature image don't allow to select another one.
  Increase maximum number of images.
  Show better error messages when media fails when exporting.
  Remove unused methods.
  Fix code layout of methods.
  Add a WPMediaProcessor to handle all resizing and export of assets in the background.

Conflicts:
	WordPress/Classes/ViewRelated/Post/WPPostViewController.m
Alertview updates.
Updated dialog title
Updated editor pod to the latest.
Style fixes.
Style updates for failedMediaAlertView
Added some missing NSAsserts
Refreshing the navbar after canceling and media uploads complete.
Updated MaxConcurrentOperationCountForUploads const name
Merge pull request #2750 from wordpress-mobile/issue/editor-344-bad-image-upload

Fixes and updates for media uploads in the new editor