[IMP] - Make recurrence mechanism on contract line

Make recurrence mechanism on contract line and some other refactoring

[FIX] - Keep contract_cron on account_analytic_account model

contract_cron defined with no_update option.
Changing it, will cause issue to past version installation.

[IMP] - Fix recurring_next_date default value

recurring_next_date should have start_date as default value in prepaid policy
and start_date + invoicing_interval if postpaid

[FIX] - Fix test check no journal

[IMP] - Return created invoices on recurring_create_invoice

[IMP] - Specific process to compute recurring_next_date for  monthly-last-day

fixes: #198

[ADD] - Add Post-migration script to bring recurrence info from contract to contract lines

[ADD] - Add search filter based on date_end and recurring_next_date

 - not_finished filter in contract search view
 - finished filter in contract search view
 - Next Invoice group by in contract search view

[ADD] - Add unit tests

- cases to compute first recurring next date
- contract recurring_next_date
- contract date_end

[IMP] - Improve Unit tests

contract/__manifest__.py

@@ -4,17 +4,19 @@
 # Copyright 2016-2018 Tecnativa - Carlos Dauden
 # Copyright 2017 Tecnativa - Vicent Cubells
 # Copyright 2016-2017 LasLabs Inc.
+# Copyright 2018 ACSONE SA/NV
 # License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
 
 {
-    'name': 'Contracts Management - Recurring',
-    'version': '12.0.1.0.0',
+    'name': 'Recurring - Contracts Management',
+    'version': '12.0.2.0.0',
     'category': 'Contract Management',
     'license': 'AGPL-3',
     'author': "OpenERP SA, "
-              "Tecnativa, "
-              "LasLabs, "
-              "Odoo Community Association (OCA)",
+    "Tecnativa, "
+    "LasLabs, "
+    "ACSONE SA/NV, "
+    "Odoo Community Association (OCA)",
     'website': 'https://github.com/oca/contract',
     'depends': ['base', 'account', 'analytic'],
     'data': [
@@ -24,9 +26,12 @@
         'report/contract_views.xml',
         'data/contract_cron.xml',
         'data/mail_template.xml',
-        'views/account_analytic_account_view.xml',
-        'views/account_analytic_contract_view.xml',
+        'views/abstract_contract_line.xml',
+        'views/contract.xml',
+        'views/contract_template_line.xml',
+        'views/contract_template.xml',
         'views/account_invoice_view.xml',
+        'views/contract_line.xml',
         'views/res_partner_view.xml',
     ],
     'installable': True,