[zanata/zanata-server] fe1107: Fix up compareTo method

[GitHub]

  Branch: refs/heads/document-list-statistic
  Home:   https://github.com/zanata/zanata-server
  Commit: fe110788d26b3b177b267d411b099c738826a65b
      https://github.com/zanata/zanata-server/commit/fe110788d26b3b177b267d411b099c738826a65b
  Author: Alex Eng <aeng at redhat.com>
  Date:   2013-10-14 (Mon, 14 Oct 2013)

  Changed paths:
    M zanata-war/src/main/java/org/zanata/webtrans/shared/model/DocumentId.java

  Log Message:
  -----------
  Fix up compareTo method