scrolling in the AlgebraViewPanel (testing on the iPad)

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@23777 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
* "Free" point in region command
* use it for start point of area's text

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@23778 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Context menu will close after user clicks on it (excepting zoom menuitem). (#2977)

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@23779 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e