Fix funkload tests

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[INFO]      [exec] FAIL: testReader (test_nuxeo.Nuxeo)
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[INFO]      [exec] Traceback (most recent call last):
[INFO]      [exec]   File "/usr/local/lib/python2.7/dist-packages/funkload-1.17.2b_20160317-py2.7.egg/funkload/FunkLoadTestCase.py", line 1021, in __call__
[INFO]      [exec]     testMethod()
[INFO]      [exec]   File "/opt/jenkins/workspace/master/FT-nuxeo-master-funkload-cap-tomcat-multidb/Slave/MULTIDB_LINUX/dbprofile/default/jdk/java-8-oracle/nuxeo-distribution/nuxeo-jsf-ui-funkload-tests/test_nuxeo.py", line 117, in testReader
[INFO]      [exec]     p = (p.edit()
[INFO]      [exec]   File "/opt/jenkins/workspace/master/FT-nuxeo-master-funkload-cap-tomcat-multidb/Slave/MULTIDB_LINUX/dbprofile/default/jdk/java-8-oracle/nuxeo-distribution/nuxeo-jsf-ui-funkload-tests/nuxeo/pages.py", line 428, in files
[INFO]      [exec]     self.fl.assert_('Upload Your File' in self.fl.getBody())
[INFO]      [exec] AssertionError: False is not true
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