Description of problem:
When loading the UI, I'm getting:
2017-03-19 04:15:02,970-04 ERROR [org.ovirt.engine.ui.frontend.server.gwt.OvirtRemoteLoggingService] (default task-10) [] Uncaught exception: com.google.gwt.useragent.client.UserAgentAsserter$UserAgentAssertionError: Possible problem with your *.gwt.xml module file.
The compile time user.agent value (gecko1_8) does not match the runtime user.agent value (safari).
Expect more errors.
        at java.lang.Throwable.Throwable(Throwable.java:70) [rt.jar:1.8.0_121]
        at java.lang.Error.Error(Error.java:29) [rt.jar:1.8.0_121]
        at com.google.gwt.useragent.client.UserAgentAsserter$UserAgentAssertionError.UserAgentAsserter$UserAgentAssertionError(UserAgentAsserter.java:79) [gwt-servlet.jar:]
        at com.google.gwt.useragent.client.UserAgentAsserter.assertCompileTimeUserAgent(UserAgentAsserter.java:49) [gwt-servlet.jar:]
        at com.google.gwt.core.client.impl.Impl.apply(Impl.java:236) [gwt-servlet.jar:]
        at com.google.gwt.core.client.impl.Impl.entry0(Impl.java:275) [gwt-servlet.jar:]


Version-Release number of selected component (if applicable):
[root@lago-basic-suite-master-engine ~]# rpm -qa |grep webadmin
ovirt-engine-webadmin-portal-4.2.0-0.0.master.20170317143110.git21edba0.el7.centos.noarch
ovirt-engine-webadmin-portal-debuginfo-4.2.0-0.0.master.20170317143110.git21edba0.el7.centos.noarch