CRM-14419 - e-notice on activity.getcount when contact_id is not passed in
CRM-14420 - api contribution.completetransaction should accept 'trxn_id' as a param
E-notice fix, next_sched_contribution

Field was renamed to reflect in built handling around suffix '_date' but this instance missed
Merge pull request #2838 from eileenmcnaughton/CRM-14419

Crm 14220 & CRM-14419 api enotice fix & extra param + e-notice