Condensate all policies into one page

[pcav]

We have various policies (e.g for unit tests, documentation etc.) but apparently not a central place to see them all.
From old PSC meeting:

• We still have old stuff hanging around https://issues.qgis.org/projects/qgis/wiki/Contributor_Guidelines
• “As of November 2007 we require all new features going into master to be accompanied with a unit test. Initially we have limited this requirement to qgis_core, and we will extend this requirement to other parts of the code base once people are familiar with the procedures for unit testing explained in the sections that follow.” https://www.qgis.org/en/site/getinvolved/development/qgisdevelopersguide/unittesting.html

[pcav]

Last link apparently broken. Current one:
https://docs.qgis.org/testing/en/docs/developers_guide/index.html (https://github.com/qgis/QGIS-Documentation/tree/master/source/docs/developers_guide)
The content of https://issues.qgis.org/projects/qgis/wiki/Contributor_Guidelines is:

Contributor Requirements and Responsibilities

In order to contribute code, patches, or documentation to the QGIS project, all developers/team members must:

• Abide by the Social Contract.
• Be familiar with the development process and the reference material available in the Development Corner, and the CODING document in the root of the QGIS Sources.
• Ensure that all code committed to the repository is unencumbered and compatible with the QGIS license, GPL version 2
• Not use or include any code that will cause a trademark or patent infringement. If you are unsure, ask on the developer mailing list or contact a Project Steering Committee member.
• Join the qgis-developer mailing list and contribute to discussions
• Agree to these requirements by sending an email to the qgis-developer mailing list stating agreement.

These requirements apply to both developers desiring commit privileges and those that submit patches.

• documentation guidelines are at: https://docs.qgis.org/testing/en/docs/documentation_guidelines/index.html (https://github.com/qgis/QGIS-Documentation/tree/master/source/docs/documentation_guidelines)

[pcav]

What other policies are there around?

[pcav]

The only other I found is: https://plugins.qgis.org/publish/
IMHO the current situation is better than expected, and I do not see much room for improvements.

[pcav]

I add:

• policies for approving local groups
• po0licies for approval of certifying QGIS trainers

[pcav]

IMHO the current situation is satisfactory. Feel free to reopen if you have a proposal to improve it.