changing default angle slider width to 180

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@29661 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
minor formatting

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@29662 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e