Synnefo

Do not record arguments of add_quota.
Add call query_serials separate from ack_serials.

Add a serial in the add_quota API call

Make side-effecting quotaholder API calls fail completely,
if part of the request is rejected.

If such a call returns a non-empty list, this means that
the entire call failed due to the actions mentioned in the list.

fix obscure bug in callpoint class that triggered db integrity errors

Callpoint class had a placeholder attribute original_calls
which was initialized as an empty dictionary,
and thus was usable. Class init() code did not initialize
original_calls as it should but because the placeholder was...

add list_holdings quotaholder api call

list_holdings() to be used to get all holdings for multiple resources
without having to call list_resources/get_holding for each entity/holding.