Pcast: Fix a notice on the module edit page
Pcast: Removed advanced setting for RSS image
Pcast: iTunes tags for RSS should be disabled if the RSS feed is disabled.
Pcast: Resequence edit the form (move the attachment above the iTunes settings)
Pcast: use the term "Podcast" in place of "pcast" in the user interface consistently.
Pcast: Upgrade getid3 to latest stable build
Pcast: Allow media files other than MP3 to calculate the duration