* Show a yellowish note icon background for unapproved comments
* Removed `const` from the note keys to fix a build warning.
* Chaned `refreshBackgrounds()` to be run from each `layoutSubviews()` call.
Ensure we have a valid group before checking the comment status.
Removed an extra space.
Prevents crash on WPImageOptimizer

Adds a few extra checks to make sure we don't release NULL objects or
return invalid data.

Fixes #2713
Merge remote-tracking branch 'origin/develop' into issue/2536-notification-comment-icon-color

Conflicts:
	WordPress/Classes/ViewRelated/Notifications/Views/NoteTableViewCell.swift
NoteTableViewCell: Brings back setSelected and setHighlighted
Implements didChangeOverrides hack-helper
Prevent crash on MediaService createMediaWithAsset

Uses existingObjectWithID instead of objectID, and checks that there's
an actual post to attach the media too.

If there is no post, `completion` will be called with a `nil` media
object.

Fixes #2719
Integrates the latest editor pod. Fixes an important regression.
Merge pull request #2720 from wordpress-mobile/issue/2719-fix-mediaservice-crash

Prevent crash on MediaService createMediaWithAsset
Merge pull request #2721 from wordpress-mobile/editor-integrate-latest

Integrates the latest editor pod. Fixes an important regression.
Updated media uploading alert text.
When uploading media, users are no longer...

...allowed to leave the post until the media upload is complete.
Make WordPressAPI pod point to a proper tag.
Make row animation configurable.
Don't animate updates unless its a blocked cell.
Merge branch 'release/4.6' of github.com:wordpress-mobile/WordPress-iOS into issue/editor-344-media-upload-blocker

# By Sérgio Estêvão
# Via Sérgio Estêvão
* 'release/4.6' of github.com:wordpress-mobile/WordPress-iOS:
  Make WordPressAPI pod point to a proper tag.
Updated to the most current 0.2.3 editor which contains a bugfix for image replacement
Merge pull request #2725 from wordpress-mobile/issue/editor-344-media-upload-blocker

Issue/editor 344 media upload blocker
No need to preserve offset when loading more.