fix JUnit test

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@30418 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Check submatrices are proportionnal instead of equal

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@30419 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e