Add a check to ensure repository names are valid according to an extended set of rules.

Fixes #534

test/test_api_usage.py

@@ -1272,6 +1272,17 @@ class TestDeleteOrganizationTeamMember(ApiTestCase):
 
 
 class TestCreateRepo(ApiTestCase):
+  def test_invalidreponame(self):
+    self.login(ADMIN_ACCESS_USER)
+
+    json = self.postJsonResponse(RepositoryList,
+                                 data=dict(repository='some/repo',
+                                           visibility='public',
+                                           description=''),
+                                 expected_code=400)
+
+    self.assertEquals('Invalid repository name', json['error_description'])
+
   def test_duplicaterepo(self):
     self.login(ADMIN_ACCESS_USER)