split the layout panel to more small ones

git-svn-id: https://svn.apache.org/repos/asf/james/hupa/trunk@1522279 13f79535-47bb-0310-9956-ffa450edef68
make fine tuning with tool buttons in toolbar

git-svn-id: https://svn.apache.org/repos/asf/james/hupa/trunk@1522280 13f79535-47bb-0310-9956-ffa450edef68