ZODB Components: Migration dialog: Only consider Portal Type Document/Tool...

ZODB Components: Migration dialog: Only consider Portal Type Document/Tool class and not all its subclasses.

This makes it easier to migrate only Document/Tool classes to the current bt5,
considering that subclasses below are likely to be used in several places.
12 jobs for arnau
Status Job ID Name Coverage
  External
passed ERP5.CodingStyleTest-Master

failed ERP5.UnitTest-Master

04:27:00

passed SlapOS.Eggs.UnitTest-Master.Python2

00:21:26

passed SlapOS.Eggs.UnitTest-Master.Python3

00:18:39

failed ERP5.UnitTest-Master

04:43:52

passed ERP5.UnitTest-Master

04:28:47

passed SlapOS.Eggs.UnitTest-Master.Python2

failed SlapOS.Eggs.UnitTest-Master.Python2

00:25:14

passed SlapOS.Eggs.UnitTest-Master.Python3

00:19:44

passed SlapOS.Eggs.UnitTest-Master.Python3

00:22:36

passed SlapOS.Eggs.UnitTest-Master.Python3

00:20:32

passed SlapOS.Eggs.UnitTest-Master.Python3

00:19:49