#3192 Online - Offline events plugged in (still needs finishing - GUI part)

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@25799 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
#3192 network field not needed

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@25800 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
#3192 initial online offline GUI states

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@25801 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e