Polygon tool (Also circle) problem fix with freehand

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@37261 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
[web] Use as text added to CAS context popup menu

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@37262 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e