Pcast: Convert logging to use new event system
Pcast: Bump version to require Moodle 2.7
Pcast: fix events to use 'podcast' in place of pcast
Pcast: Add events for comments
Pcast: convert $module to $plugin (See MDL-43040)
Pcast: fix missing alternate name fields
Pcast: fix phpdocs in events
Pcast: Add events for viewing comments, ratings, and viewers