Check for podcast_id, not podcast.
podcastid, for consistency.
Add stub do-controller for covers.
Fill in basic form fields.
Add hidden podcast field.
Rename to podcastid for consistency.
Don't require existing cover file.
Initial untested doSetCover.
Add getCover (temporary implementation).
Get current cover URL, if any.
Merge branch 'master' of https://www.github.com/UniversityRadioYork/MyRadio