Kickstart for new Reduce

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@23993 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Fix for #3104

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@23994 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Ticket #3097: arrow keys now move formulas both in recent Firefox and Chrome, but there might be some browsers in which this doesn't work

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@23995 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
More alternatives for exp. equation tests

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@23996 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e