Spawn gevent using same python executable

Solves issues of spawning wrong version of python or popping out of virtualenv
[IMP]document: Remove document menu and submenu from knowledge, hr_applicnt_document: add kanban view in hr resume and letter, mail: change the kanban view of attachment
[WIP]remove some unneeded argument in computing reconciliation line
[REF]refactor account widget to reduce rpc call
[FIX] account: structured communication have a higher priority
[FIX] account: display 5 proposals in the bank statement reconciliation widget
[FIX]remove unused variable
[FIX] account: display 5 items in the bank statement reconciliation proposals
[REM] removed some files wrongly commited preivously because of that bitchin 'git add .' command
[FIX]account reconciliation widget: add account_code to filter
Update CONTRIBUTING.md
Merge pull request #717 from odoo-dev/master-bnk-stmt-widget-fix-csn2

Master bnk stmt widget fix csn2

reduces a lot the number of rpc call in the bank statement widget interface.
[IMP] take into account the context parameter 'defer_parent_store_computation' also on write operations
Merge pull request #746 from acsone/master-defer_parent_store_computation-on-write

[IMP] orm: defer_parent_store_computation in write

Take into account the context parameter 'defer_parent_store_computation' in write operation.
When executing actions with this key in the context, _parent_store_compute should be manually called afterwards. Use at your own risks...
Merge pull request #727 from odoo-dev/master-document-fix-issue-gan

[IMP] document: remove from knowledge + view type fixes
Merge pull request #528 from bwrsandman/patch-1

[FIX] Spawn gevent using same python executable
[IMP]: Remove user id domain changes from ir rule
Merge pull request #726 from odoo-dev/master-bug-1233410-ypa

[FIX] crm_claim: track responsible, allowing automatic subscription and helping avoiding some access rights issues.
[MERGE] from odoo/master