[zanata/zanata-server] e3f4ed: Update username regular expression:

[GitHub]

  Branch: refs/heads/rhbz981498
  Home:   https://github.com/zanata/zanata-server
  Commit: e3f4ed7fea42c6f2bdd44b08ca4415d0640095e3
      https://github.com/zanata/zanata-server/commit/e3f4ed7fea42c6f2bdd44b08ca4415d0640095e3
  Author: Alex Eng <aeng at redhat.com>
  Date:   2015-06-01 (Mon, 01 Jun 2015)

  Changed paths:
    M zanata-war/src/main/java/org/zanata/action/RegisterAction.java

  Log Message:
  -----------
  Update username regular expression:

https://bugzilla.redhat.com/show_bug.cgi?id=981498