gramps.gen.filters.rules.test.person_rules_test.FilterMatchProxyDbTest() should generate an error on Github, but it doesn't

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I’ve added setUpModule() and tearDownModule() to reports_test.py and moved module-level initialization code into the former.

Also setUpModule() captures state of gramps.gen.config.config before execution of reports = ReportControl() and the remaining initialization, and tearDownModule() restores it.

Now unit tests which should fail - fail as expected.

Later I’ll try to fix the failing tests and, if successful, will submit PR with all changes.