issue #225
new batch of code
fixed nipped code in playerOpen.js
minor changes
added some comments
The user can now select what tags get displayed in the advance tab.
The list is saved, later being used to load the same selected advance
tags when opening up the metadata editor.  The list list gets
updated  everytime selections are made inside of the menupopup. See
comments.
Merge pull request #1 from luisgmarine/EnhancedMetadataEditorV4

Enhanced metadata editor v4