Updates to QC item viewer

     Refactored more of the QC item viewer for clean code and HTML5 compliance
     Renamed many of the styles to include sbkQC_ prefix and added some new classes
     Renamed many of the javascript methods for clarity
     In javascript, switched to using style.visibility, rather than seperate classes
     Cursor updates are now applied to the spans, not the body. (Now works after a page move)
     Cursor mode is now saved in a javascript variable, rather than checking for cursor
     Clicking on the thumbnail now sets the checkbox or main thumb in those modes
     Mouse in and out of page span moved into javascript file
Merge branch 'master' of github.com:MarkVSullivan/SobekCM-Web-Application