Fix a few bugs

* remove the check for when the spinner is animating in the setProgress
method as it was sometimes not showing the progress view when it should
* ensure the post remoteStatus is set to failed if the media or post
fail uploading so the post won't get stuck in an uploading state
* remove disableBlogSelection and override setEnabled instead
* use CGRectGetMidX/CGRectGetMidY in the CircularView
* rename newQuickPhotoButtonTapped to quickPhotoButtonTapped