Operation should not know about event handler

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@27822 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
United Offline and Online operations

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@27823 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e