Unset the uTorrent read only flags

Fix for #1871

Note that this is a fix for Windows only. I am unaware if this issue
arises on Linux/Mac and what happens with this fix on those systems.
uTorrent ratio issue fixed

The tryFloat function returns 0 if it is fed with a float(!). This resulted in the seed_ratio being set to 0 on first/automatic download. When manually downloading, it did work as the ratio is stored as a string.
Adding code for custom urls UI
Adding more code.
Revert "Adding more code."

This reverts commit 3a8f891c7d168d570b1c02ac51ebe00ebef34604.
Added custom url code handling
Changed description to be better suited for this.
Made code more python-y per mano3ms recommendation.
Fix untagDir and hastagDir

Changes in commit 8a252bff64b2bb2d376673a0b00e9624d44aaf4c broke the
tagging functionality
Add failsafe for symlink errors

E.g. on Windows you need Admin rights to symlink...
Remove 'move' exception

No need to remove files when 'move' is selected as the downloaders do
this themselves now when cleaning up
use right variable for pause

fixes #2049
provide more info in case no movie is found

Several users reported an issue with "more than one group found (0)",
and it was unclear to them what it meant. This might help.
MPAA rating for renamer
Merge branch 'develop_seed_fixes' of git://github.com/mano3m/CouchPotatoServer into mano3m-develop_seed_fixes
Merge branch 'rotten_tomatoes_custom_urls' of git://github.com/Lordcrash/CouchPotatoServer into Lordcrash-rotten_tomatoes_custom_urls
Add the old rottentomatoes to default enabled list
Simplify linking

Thanks @mano3m
Match default ports

Thanks @cpg
Do window size check inside load event