Fix random webdriver failures linked to unsafe clicks

org.openqa.selenium.TimeoutException: Timed out waiting for page load.
Command duration or timeout: 60.62 seconds
Build info: version: '2.53.0', revision: '35ae25b1534ae328c771e0856c93e187490ca824', time: '2016-03-15 10:43:46'
System info: host: 'e216c4c8748e', ip: '172.17.0.11', os.name: 'Linux', os.arch: 'amd64', os.version: '4.4.0-31-generic', java.version: '1.8.0_77'
Driver info: org.openqa.selenium.firefox.FirefoxDriver
Capabilities [{applicationCacheEnabled=true, rotatable=false, handlesAlerts=true, databaseEnabled=true, version=26.0, platform=LINUX, browserConnectionEnabled=true, nativeEvents=false, acceptSslCerts=true, webStorageEnabled=true, locationContextEnabled=true, browserName=firefox, takesScreenshot=true, javascriptEnabled=true, cssSelectorsEnabled=true}]
Session ID: 0dd1ff5b-e6c7-4b05-bd58-bd01482f6d36
	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
	at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
	at org.openqa.selenium.remote.ErrorHandler.createThrowable(ErrorHandler.java:206)
	at org.openqa.selenium.remote.ErrorHandler.throwIfResponseFailed(ErrorHandler.java:158)
	at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:678)
	at org.openqa.selenium.remote.RemoteWebElement.execute(RemoteWebElement.java:327)
	at org.openqa.selenium.remote.RemoteWebElement.click(RemoteWebElement.java:85)
	at sun.reflect.GeneratedMethodAccessor39.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.openqa.selenium.support.pagefactory.internal.LocatingElementHandler.invoke(LocatingElementHandler.java:51)
	at com.sun.proxy.$Proxy50.click(Unknown Source)
	at org.nuxeo.functionaltests.pages.LoginPage.login(LoginPage.java:91)
	at org.nuxeo.functionaltests.pages.LoginPage.login(LoginPage.java:101)
	at org.nuxeo.functionaltests.pages.LoginPage.login(LoginPage.java:114)
	at org.nuxeo.functionaltests.AbstractTest.login(AbstractTest.java:474)
	at org.nuxeo.functionaltests.AbstractTest.login(AbstractTest.java:470)
	at org.nuxeo.ftest.cap.ITPublishDocumentTests.testMultiplePublications(ITPublishDocumentTests.java:536)
Caused by: org.openqa.selenium.TimeoutException: Timed out waiting for page load.
Build info: version: '2.53.0', revision: '35ae25b1534ae328c771e0856c93e187490ca824', time: '2016-03-15 10:43:46'
System info: host: 'e216c4c8748e', ip: '172.17.0.11', os.name: 'Linux', os.arch: 'amd64', os.version: '4.4.0-31-generic', java.version: '1.8.0_77'
Driver info: driver.version: unknown
	at <anonymous class&gt;.Utils.installClickListener/e<(file:///tmp/anonymous8596056340729490326webdriver-profile/extensions/fxdriver@googlecode.com/components/command-processor.js:9372)
	at <anonymous class&gt;.WebLoadingListener/e(file:///tmp/anonymous8596056340729490326webdriver-profile/extensions/fxdriver@googlecode.com/components/command-processor.js:5142)
	at <anonymous class&gt;.WebLoadingListener/<(file:///tmp/anonymous8596056340729490326webdriver-profile/extensions/fxdriver@googlecode.com/components/command-processor.js:5150)
	at <anonymous class&gt;.fxdriver.Timer.prototype.setTimeout/<.notify(file:///tmp/anonymous8596056340729490326webdriver-profile/extensions/fxdriver@googlecode.com/components/command-processor.js:625)