group creation: fix display name over XML-RPC, activity recording

Change-Id: I9f3ff3ef9a51e2b29bd1a6d0f30b180d3dc4945a
tests: fix "Group is not" search in test_system_search

When run in the whole suite this test was failing, due to an increase in
the number of group systems we have now. The test should search by the
group it specifically created instead.

Change-Id: I91d93cf9e71f8fd3bd6784a44e5dbd8f534c55a6
Merge changes I91d93cf9,I9f3ff3ef into develop

* changes:
  tests: fix "Group is not" search in test_system_search
  group creation: fix display name over XML-RPC, activity recording