Infinity ^ 0 -> NaN

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@32594 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Style update for web

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@32595 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e