add App.getMillisecondTime()

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@26074 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Attempt to update webtest for recent GeoGebraWeb behavior


git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@26075 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e