[zanata/zanata-server] 4c2e3f: fix ConcurrentModificationEx in logout

[GitHub]

  Branch: refs/heads/seam-to-cdi
  Home:   https://github.com/zanata/zanata-server
  Commit: 4c2e3f10dbc5b396c78af47762451cce8b5030e0
      https://github.com/zanata/zanata-server/commit/4c2e3f10dbc5b396c78af47762451cce8b5030e0
  Author: Patrick Huang <pahuang at redhat.com>
  Date:   2015-11-18 (Wed, 18 Nov 2015)

  Changed paths:
    M zanata-war/src/main/java/org/zanata/events/LogoutEvent.java
    M zanata-war/src/main/java/org/zanata/security/ZanataIdentity.java
    M zanata-war/src/main/java/org/zanata/webtrans/server/TranslationWorkspaceManagerImpl.java
    M zanata-war/src/test/java/org/zanata/webtrans/server/TranslationWorkspaceManagerImplTest.java

  Log Message:
  -----------
  fix ConcurrentModificationEx in logout