- clean up

...bluebutton/presentation/DocumentConversionServiceImp.java

...bigbluebutton/presentation/imp/Jpeg2SwfPageConverter.java

...bluebutton/presentation/imp/OfficeDocumentValidator2.java

.../org/bigbluebutton/presentation/imp/PageExtractorImp.java

...ava/org/bigbluebutton/presentation/imp/PageToConvert.java

...org/bigbluebutton/presentation/imp/PdfPageDownscaler.java

...ton/presentation/imp/PdfToSwfSlidesGenerationService.java

.../bigbluebutton/presentation/imp/Png2SwfPageConverter.java

...ava/org/bigbluebutton/presentation/imp/PngCreatorImp.java

...entation/imp/PresentationConversionCompletionService.java

...luebutton/presentation/imp/PresentationFileProcessor.java

...g/bigbluebutton/presentation/imp/ThumbnailCreatorImp.java

bigbluebutton-web/grails-app/conf/spring/doc-conversion.xml