Update legacy 'controller-action' routing to attribute-based routing

[Brian Lewis]

First versions of web api controlled routing through the WebApiConfig.cs in App_Start, and [ActionName()] attributes.

This is clumsy, and using explicit routes as attributes is easier to understand.

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e.g.

[ActionName('filter')]

gets replaced with

[Route("collection\filter"1)]

Ultimately most of the code in WebApiConfig can porobably og.

Similarly, Routeconfig.cs defines the Mvc routing rules. These can also be eliminated by using mvc Attribute routes

this is a follow-on from #821

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[Brian Lewis]

task(api): add standard GET endpoints for reading collections, with filter in the Uri

Resolves #821 #911

→ <<cset 8c9a28710f2b>>