[zanata/zanata-server] 5fcd54: Throw exception if username is not valid

[GitHub]

  Branch: refs/heads/ZNTA-855-enforce-username
  Home:   https://github.com/zanata/zanata-server
  Commit: 5fcd544340232a5af746980367287269b035b429
      https://github.com/zanata/zanata-server/commit/5fcd544340232a5af746980367287269b035b429
  Author: Alex Eng <aeng at redhat.com>
  Date:   2016-05-19 (Thu, 19 May 2016)

  Changed paths:
    M docs/release-notes.md
    M zanata-war/src/main/java/org/zanata/ApplicationConfiguration.java
    M zanata-war/src/main/java/org/zanata/action/AbstractProfileAction.java
    M zanata-war/src/main/java/org/zanata/action/NewProfileAction.java
    M zanata-war/src/main/webapp/profile/create_user.xhtml

  Log Message:
  -----------
  Throw exception if username is not valid