Trying to disallow accented characters in Mac sandbox

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@28499 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Moved SVG resource pointers to HTML5 (useful for #3601, smart)

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@28501 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e