Configuration secrets

As discussed in http://flexget.com/ticket/2523
Plugin mode
manager.py fixed
Update pyload.py

fixed http://flexget.com/ticket/2527
Filter torrents without a main file

An option in content_filter to reject multifile torrents without a file
at least 90% of total size.
A more reliable exists plugin

The plugin currently compares entries and files/folders by title, but
the entry title for a file usually doesn't include its extension, so is
pratically impossible rely on exists when task input is provided by
find, listdir and several other plugins.
Added urlrewrite for www.divxatope.com
Added plugins to copy and delete files

"move" has been updated too.
Just a missing pathscrub
A metainfo plugin for owned episodes

Sets the trakt_in_collection flag for episodes found in the user library
(i.e. previously sent with trakt_add).
Changes in error handling
Missing spaces
Update deluge plugin to new config schema
Fix a crash in set_series_begin output plugin.
Switch torrentz search to use requests refs #2575
Make sure non-ascii output from commands does not crash exec plugin.
fix #2599, #2366, #2203
Don't break exec plugin on python 2.6
Merge pull request #262 from tarzasai/trakt_collected_lookup

A metainfo plugin for owned episodes
Merge pull request #255 from tarzasai/content_bigfile

Filter torrents without a main file
Fix issue with subliminal errors without messages