changed size from 30x30 to 20x20

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@37311 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
changed public to protected

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@37312 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
position of customColorButton; removed border of checkbox

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@37313 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
position of closeButtonPanel

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@37314 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e