beautify the multiuploader

git-svn-id: https://svn.apache.org/repos/asf/james/hupa/trunk@1522312 13f79535-47bb-0310-9956-ffa450edef68
fill the empty compose view with the old message when the composing type are reply, replyAll, forward and preparing for about & deleting operation

git-svn-id: https://svn.apache.org/repos/asf/james/hupa/trunk@1522313 13f79535-47bb-0310-9956-ffa450edef68