[zanata/zanata-platform] 80c2c1: fix: prevent logged in user in sign_in page

[GitHub]

  Branch: refs/heads/prevent-login-page
  Home:   https://github.com/zanata/zanata-platform
  Commit: 80c2c15d6080eee35c29bc4da08713666b7cb5bb
      https://github.com/zanata/zanata-platform/commit/80c2c15d6080eee35c29bc4da08713666b7cb5bb
  Author: Alex Eng <aeng at redhat.com>
  Date:   2017-10-24 (Tue, 24 Oct 2017)

  Changed paths:
    M server/services/src/main/java/org/zanata/action/LoginAction.java
    M server/services/src/main/java/org/zanata/util/UrlUtil.java
    M server/services/src/test/java/org/zanata/action/LoginActionTest.java
    A server/services/src/test/java/org/zanata/util/UrlUtilTest.java
    M server/zanata-war/src/main/webapp/WEB-INF/faces-config.xml
    M server/zanata-war/src/main/webapp/account/login.xhtml
    M server/zanata-war/src/main/webapp/account/singleopenidlogin.xhtml

  Log Message:
  -----------
  fix: prevent logged in user in sign_in page