fake name can trip up teams

[chadwhitacre]

In the grand tradition of #3579 and #3697 ...

=================================== FAILURES ===================================
_________________________ TestFakeData.test_fake_data __________________________
self = <test_fake_data.TestFakeData testMethod=test_fake_data>
    def test_fake_data(self):
        num_participants = 5
        num_tips = 5
        num_teams = 1
        num_transfers = 5
>       fake_data.populate_db(self.db, num_participants, num_tips, num_teams, num_transfers)
tests/py/test_fake_data.py:17: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
gratipay/utils/fake_data.py:287: in populate_db
    teams.append(fake_team(db, teamowner))
gratipay/utils/fake_data.py:87: in fake_team
    teamslug = community.slugize(teamslugname)
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
slug = "D'Amorebury"
    def slugize(slug):
        """Convert a string to a string for an URL.
        """
>       assert name_pattern.match(slug) is not None
E       AssertionError: assert None is not None
E        +  where None = <built-in method match of _sre.SRE_Pattern object at 0x2b4cece13a58>("D'Amorebury")
E        +    where <built-in method match of _sre.SRE_Pattern object at 0x2b4cece13a58> = name_pattern.match
gratipay/models/community.py:11: AssertionError
----------------------------- Captured stdout call -----------------------------

Discovered on https://travis-ci.org/gratipay/gratipay.com/builds/77886117 for 7306177 (since restarted).

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[chadwhitacre]

Folding #4066 into here ...

One of the fake names is D'Amoreburgh, which is not valid as a team name.

https://travis-ci.org/gratipay/gratipay.com/builds/138331186#L673

[chadwhitacre]

https://travis-ci.org/gratipay/gratipay.com/builds/144190380

[chadwhitacre]

@kaguillera Maybe this is a good one for you after #4078 lands?

[kaguillera]

will do

[kaguillera]

Closing this unless something else comes up.