Contribution Create api must create required financial item and financial transaction records by default

Currently this api is NOT creating all the minimally required records for a 'valid' contribution which are:

• contribution (yes)
• line_item (yes - but pretty sure that the required line_item.financial_type_id is not being populated and it should be)
• financial_item (NO)
• entity_financial_item (NO)
• financial_trxn (NO, needed if status is 'Completed').
• entity_financial_trxn (NO, needed if status is 'Completed').

We require a financial_type_id for civicrm_api3_contribution_create. This should allow us to create the minimally required financial records when a contribution is created.

NOTE: We need to discuss UPDATE handling (e.g. call to contribution_create with an ID and changes to amount, financial type, etc.).

Update workflow is mentioned here: http://wiki.civicrm.org/confluence/display/CRM/CiviAccounts+4.3+Data+Flow#CiviAccounts4.3DataFlow-Updatecontribution