properties files and related resources automatically updated from ggbtrans

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@23326 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Cas loading with requestanimationframe, but commented out, somehow buggy (any idea? :-))

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@23327 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e