Simplified "defaction" syntax for redirecting to (existing) functions.

Avoids unnecessary creation of functions.
Macro that defines a routing function in the current namespace.
Enhanced router-directed target lookup for namespaces.
Define a simple request-name-router for the file upload service.

Every target namespace (aka "service") needs to define a router to make its
defined targets (currently: actions or channels) available for (handling)
incoming requests.
Cleanup: naming, removed unused functions.
Merge branch 'master' of https://github.com/DrDoofenshmirtz/FmWebSockets