Fix NEO+WCFS deployment and update WCFS
Hello,
this MR generally aims to simplify deployment of an ERP5 instance with WCFS+NEO, so that it works almost automatically (users still need to explicitly set correct NEO and maybe ZODB version, but apart from this everything should work out of the box with this).
All the NEO+WCFS options aren't tested by SlapOS integration tests (due to !1308), however I tested them manually with my development instance.
@Tyagov This MR also aims to update 'wendelin.core' version, which means that after this MR is merged 'wendelin.core' deployed with SlapOS supports the new ZBlk option 'auto' (that has been added in wendelin.core!20 (closed)).
I'd suggest to wait with merging until wendelin.core!18 (merged) and kirr/neo!10 (closed) are closed, so that we can include fixes in 'wendelin.core' version upgrade.
Best, Levin