Description of problem:
When using the IPA WebUI previously set account Contact Settings and Employee
Information are not displayed  when viewing a specific user.

When searching for the same user with "ipa user-show <name> --all", the details
are there.

When trying to add missing data in the webUI, you get the following error:

 "IPAError 4202: EmptyModlist - no modifications to be performed"

Version-Release number of selected component (if applicable):
ipa-server-4.5.0-21.el7_4.1.2.x86_64

How reproducible:
Everytime

Steps to Reproduce:
1.  When looking at a contact's data in the webUI

 Traceback (most recent call last):
   File "/usr/lib/python2.7/site-packages/ipaserver/rpcserver.py", line 367, in wsgi_execute
     result = command(*args, **options)
   File "/usr/lib/python2.7/site-packages/ipalib/frontend.py", line 447, in __call__
     return self.__do_call(*args, **options)
   File "/usr/lib/python2.7/site-packages/ipalib/frontend.py", line 475, in __do_call
     ret = self.run(*args, **options)
   File "/usr/lib/python2.7/site-packages/ipalib/frontend.py", line 797, in run
     return self.execute(*args, **options)
   File "/usr/lib/python2.7/site-packages/ipaserver/plugins/cert.py", line 1537, in execute
     ra = self.api.Backend.ra
   File "/usr/lib/python2.7/site-packages/ipalib/plugable.py", line 335, in __getattr__
     raise AttributeError(key)
 AttributeError: ra