Purpose
=======

From a busines point of view

Integration with accounting. A period of pay include journal entries and
payments. We need to generate both from a batch. 

The entries must be grouped
- 1 line for salaries
- 1 line for all ATN
- ...

Payroll generate a Sepa document to send to the bank

+ as this part is managed by an accountant add menu entries in the
accounting app.

From a functional point of view: 

Debit and credit accounts are defined on the rules (hr.salary.rule)
The journal should be defined on the structure to be foced


Specification
=============

- Usability: the module l10n_be_hr_payroll Should install the accounting
  (right now it install invoicing). On the structure, add a journal m2o.

- On rule: add group accouting items on salary rule

- Improve method 'action_payslip_done' to support multiple entries by move.
  Generate only one big entry with all payslip. Generate one total line total
  for reconciable if group is set.
  Now the payslips are no longer calculated individually,
  all accounting entries are grouped together when the pay slips are
  validated.
  This allows you to have a single accounting entry for all validated
  payroll records.

- Buttons on batch
    - Add 2 buttons on the batch form 
        - "Create Entry": it will generate a grouped entries according config of
          the rule
        - "Payment": it generate an xml with all line to send to the bank
          See https://www.odoo.com/documentation/user/11.0/accounting/receivables/customer_payments/payment_sepa.html
    - Payroll directly generate the xml (no payments in accounting)

- Button on payslips: Everything should be done through the payslips 
    - create draft entry
    - Create SEPA payment xml 
    - Make appear those buttons on the form only if batch is not set 

- Belgian rules for the entries: 
    - In data for Belgium: https://docs.google.com/spreadsheets/d/1HlnwoExR_O833sij01p7UizSkrMqcm6oF4GvOeIz5lg/edit#gid=0
    example of one of our OD: https://drive.google.com/file/d/0B_hhLmdks1wEdXZSQzJIeVBDOXNiNVctczJzUTBQZVBuNkgw/view?usp=sharing

- Create a Journal salaries (type miscelaneous) and apply all structure on
  this journal

- Create new accounts to manage this.

- Sepa for payroll should be an option in the setting of payroll
  (like in accounting)

- Configure the accounts on the rules when setting a CoA on a company.

    Now the payslips are no longer calculated individually,
    all accounting entries are grouped together when the pay slips are
    validated.
    
    This allows you to have a single accounting entry for all validated
    payroll records.
    
    Other notable point in this commit:
    - When installing the Belgian Localisation or when installing the
      Belgian CoA on a company, configure the accounting data (journal,
      accounts on the salary rules)
    - Don't create automatically a payslip batch when creating a payslip

TaskID: 1935200