Add support for custom Piranha Manager authorization policy requirements

[tedvanderveen]

Currently Piranha Manager requires Claims based authorization to satisfy controller authorization Policies.
This PR allows for a custom delegate to be provided through which policies can be configured so that alternative requirements can be used. For example Role based authorization.

[tidyui]

Looks good @tedvanderveen Could you possible add some lines with an example on how to configure the application policies here?

https://github.com/PiranhaCMS/piranha.core.docs/blob/master/src/04.%20Architecture/02.%20Authentication/Index.md

Regards

[jensbrak]

Useful addition and it makes the existing functionality more clean too! Nice!

[tedvanderveen]

Looks good @tedvanderveen Could you possible add some lines with an example on how to configure the application policies here?

https://github.com/PiranhaCMS/piranha.core.docs/blob/master/src/04.%20Architecture/02.%20Authentication/Index.md

Regards

I've added sample of usage: PiranhaCMS/piranha.core.docs@master...tedvanderveen:patch-1

[tedvanderveen]

Please allow me to take a second look at this @tidyui. Issue I encounter in my project is the 1-to-1 relation between all the Permissions and Policies.