Polish solution for all QP problems

Reorganize the API docs to nice sections

Try to fix gitlab docbuilding deploy (attempt 2)

reflect the workflow change in contrib guide

This reverts commit 68d89398.

temporarily increase tolerance on the MOMA test (needs fixup later)

use the gitlab-documenter integration directly (attempt 1)

run tests&docs on develop, trigger gitlab also on new tags

silence MOMA tests

moma implementation and tests

try to revive binder

remove some of the repeated code, make MOMA more flexible

This reverts commit 9a5d280f.

This reverts commit b7ab8576.

remove binder altogether

docfixes

explain the use of Serialized models better

Closes #468

closes #361