Mig mgmtsystem manual to v. 10.0

[eugen-don]

Mig mgmtsystem manuals to v. 10.0
depends

• MIG mgmtsystem_system to V. 10.0 #166
• [MIG] document_page_approval knowledge#122

[dreispt]

This PT includes the code from #166 .
Best practice is to include only the ported manual's code and in the PR description mention the dependency on other PRs.
This way the diff will show reviewers only the relevant code.

One functional question: this module adds the mgmtsystem manual, but that is also added on the mgmtsystem base module.
In my opinion, honoring the separation of concerns principle, all manual related features should go here.

[max3903]

@eugen-don Please rebase.

[eugen-don]

@max3903 there was only one commit left to rebase.
I rebased on origin/10.0 two commits into one...
Or did you mean i missed some other prior commits?

edit:
OK i removed the code from the other PR...
You can merge if it passes the checks

[max3903]

@eugen-don You need to rebase your branch on top of 10.0 to get mgmtystem migrated module.

git remote add oca git@github.com:oca/management-system.git
git fetch oca
git rebase -i oca/10.0

https://help.github.com/articles/about-git-rebase/

[eugen-don]

oh right you allready merged, i forgot

edit:
rebased on OCA/10.0