This extension will close any previous preview window generated from Escenic Content Studio.
This extension removes old Content Studio previews leaving you with the latest only. That way you won't have a million tabs open when previewing your articles
Version 0.1 - Initial version removing any tokenized escenic previews of the same type
Version 0.2 - Minor fixes
Version 0.3 - Also covers accessTokens
Version 0.4 - Now also handles urls that do not contain port descriptor