yaml: use selected user and not admin for onchange

Fixes: #1885
yaml: use selected user and not admin for defaults
[FIX] account_check_writing: correct domains on allow_check

Fixes #4269
[FIX] project: don't use planned_hours in project gantt

The gantt view does not have enough data to properly display a project's length
based on only the planned hours.
It also makes it impossible to change the project's length using drag & drop.
It's safer to simply display the start and end dates recorded in the project
Fixes #2632
[REF] Packaging: Backport of v8 packaging

[REF] Packaging: backport of a7ab5a4109ec99d77f61a6d4c8bc7696149ea09c
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[FIX] Packaging: backport of 134716308266ff
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[REF] Package: backport of 012bc01c113c8d008a0eb94219f1cb519519ff0d
[FIX] Package: partial apply of d9e72a3716488ce8
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[REF] Package: partial backport of d4624fa826a5e9542782f2c53c8ba2c766d093bc
[REF] Package: backport of 9f13722f7837a80e423ca6e7a7337d66f900e564
[FIX] sql_db: close db connexions before removing them.

Closes #831 aka lp 1322191
[FIX] event onchange event type

Courtesy of Alejandro Santana

Closes: #1046, #1047
Merge pull request #1886 from lepistone/7.0-fix-yaml-onchange-user

use selected user and not admin to run yaml tests
[FIX] survey: use ustr instead of str for question.question
[FIX] point_of_sale: pos details report company taxes and payments

If the sales details only fetches the pos sales details of his own company, it should be the case for the pos payments and taxes as well.
[IMP] resource: remove the need to install matplotlib

Seriously? To flatten a list, a math dependency of 80MB?
Fixes #4383
[MERGE] forward port of branch 7.0 up to e151e8f
[MERGE] forward port of branch saas-3 up to 30674c3
[FIX] website: add missing decorator for better guess type

The definition of the render method was guessed as cr_uid_context instead of
cr_uid_ids_context, making calls in the new api breaks
Fixes #4401
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