Ticket #3823: part of SpreadsheetContextMenuW ported, but not activated yet

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@30055 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
#3814: GraphicsViewLocationModel and is applied to web.

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@30056 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e