Minor performance improvements (mostly string compare)
Fixed possible crash when opening a video file
Clean up namespaces.
Minor optimization
VLC Media Player -> VLC media player - thx xylographe  :)
Merge pull request #242 from xylographe/optim0

Minor optimization in src\Logic\SubtitleFormats\AvidCaption.cs
001 woordenboek;ansi
002 nl-NL.xml