Deleting episodes duplicates

[seyguai]

First of all, nice work !
I might have found some issues when trying to remove duplicates for episodes.

1. the find_dupids list is filled with imdb and tmdb, but the removal algorithm only matches against imdb

                find_dupids.append(data[options.type[:-1]]['ids']['imdb'])
                find_dupids.append(data[options.type[:-1]]['ids']['tmdb'])
                    if data[options.type[:-1]]['ids']['tmdb'] == dupid

2. the removal algorithm calls api_remove_from_list with a list of raw ids, but the function wraps that list with shows when the list type is episodes, when the Trakt API expects ids

     if options.type == 'episodes':
            values = { 'shows' : remove_data }

3. the algorithm fills a list dup_ids with only duplicated ids from find_dupids, but only iterates over find_dupids. In my case, there were some None values in find_dupids, which meant that some episodes where removed without reason