Description of the issue/feature this PR addresses:

Current behavior before PR:

Desired behavior after PR is merged:
## 

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… as 'docids'

1/ If no docids are passed in get_action (empty list) do not put in context

2/ The method should accept ids or browse records as docids for retrocompatibility.
- The api.v7 method took ids as docids
- The api.v8 method took a browse records 'records' to call the api.v7 method with
  'records.ids' as docids
  In python, we cannot write 2 functions with the same name that takes differents types
  for the same argument. The function 'guess' in api.py will lead to a crash if we expect
  a browse record and we send a list
  The only way to allow the method to receive different types for the same argument is
  to decorate it with '@api.noguess' to prevent any effect from guess method.
  That way, we check directly if 'docids' is an id, ids or a browserecord and we always set
  a list instead.