[trunk] Fix for #3845

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@30140 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Making TableText lines thicker in order to show them in Firefox all the time (otherwise they might be disappearing due to a Firefox bug)

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@30141 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e