VideoTSParent nfo/jpg handling

Handle nfo/jpg files in the VIDEO_TS or BDMV parent directory if
VideoTSParent is true. Only in Settings.xml now, will expose later.
workaround for scraping season-special-fanart.jpg

this is only a workaround
Merge pull request #5 from GreenOnyx/VideoTSParent

VideoTSParent nfo/jpg handling
added <movie>-poster.jpg to pull request #5