#504 updatedByUser is now optional
Merge pull request #505 from janus-ssp/feature/504-make-updated-by-user-optional

[REVIEW] #504 updatedByUser is now optional
Updated changes
Added missing API alias in upgrade docs
Merge remote-tracking branch 'origin/develop'
Release of new version 1.18.2
Merge remote-tracking branch 'origin/master' into feature/450-rest-api-doc
#450 Added missing name for connection
#450 Loaded form via DI container which allows Nelmio apidoc to use it, this requires to set a default type
#450 Removed generated values from form