Fix tint colour of download button now matches global tint

Signed-off-by: Tom Diggle <tom@tomdiggle.com>
Remove duplicate image

Signed-off-by: Tom Diggle <tom@tomdiggle.com>
Change rename IGEpisodesListViewController class to IGEpisodesViewController

Signed-off-by: Tom Diggle <tom@tomdiggle.com>
Minor tidy up of episode show notes related code

Removed reference to episode

Signed-off-by: Tom Diggle <tom@tomdiggle.com>