catch 404's on requests to banners.xml
Merge pull request #292 from lalmanzar/master

Capitalising a collection
disable server restart button after click
check genres for null or whitespace
renamed image refresh setting in config page
raise movie db request period to 500
don't misidentify xbmc trailers as movies
support xbmc -trailer suffix
make sure series and episode providers are checking for existence of images
re-enable http compression for all providers except for last fm