Braid: Update mirror 'vendor/plugins/domgen' to '42c0442'
Support polling versus undefined replication modes.

When polling replication mode is selected then hook into correct base classes in replicant.
Disable external cache management
Use the replicant provided poll resource
Whitespace
Remove unused field
Remove class now provided by replicant+domgen library
Make sure session manager implements the poll interface
Update to the latest replicant API
Generate a standard interface
Rename class
Extend generated interface
Move classes into the same package as generated classes
Braid: Update mirror 'vendor/plugins/domgen' to 'eb1096c'
Bump the version of replicant in use
Braid: Update mirror 'vendor/plugins/domgen' to 'a78fdd7'