[doc][fix] Remove unused doc
[doc][fix] remove unused module from compilation
[doc][fix] extract analytics tracker to constant file
[doc][feature] Download page integration in GWT
[sampl-web] [fix] Integrate the ! prefix to places
[core][fix] Theme controller : remove all existing link elements
[doc][fix] Html extractor remove cached module, iframe, google Analytics and <i> tag
[doc][fix] Add missing License headers