ERP5WebCodingStyle: reuse CodingStyleTestCase correctly

CodingStyleTestCase tests by default the last business template returned
in getBusinessTemplateList, but  getBusinessTemplateList returned value
changed overtime and this test did not really test erp5_web

Also name include "ERP5 Web" in test class name, as it tests ERP5 Web.

product/ERP5/tests/testERP5WebCodingStyle.py

@@ -30,13 +30,16 @@
 import unittest
 from Products.ERP5Type.tests.CodingStyleTestCase import CodingStyleTestCase
 
-class CodingStyle(CodingStyleTestCase):
+class ERP5WebCodingStyle(CodingStyleTestCase):
   """
   Check consistency of erp5_web business template code
   """
   def getTitle(self):
     return "erp5_web CodingStyle"
 
+  def getTestedBusinessTemplateList(self):
+    return ('erp5_web', )
+
   def getBusinessTemplateList(self):
     """
     Return the list of required business templates.
@@ -51,5 +54,5 @@ class CodingStyle(CodingStyleTestCase):
 
 def test_suite():
   suite = unittest.TestSuite()
-  suite.addTest(unittest.makeSuite(CodingStyle))
+  suite.addTest(unittest.makeSuite(ERP5WebCodingStyle))
   return suite