Construction defaults and tool bar for intersection curve

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@32673 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
* Construction defaults for polygon tool
* helper 2D points don't set their properties

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@32674 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e