clarify the response for an "all entities" request

[trscavo]

When I type URL

http://mdq-beta.incommon.org/global/x-entity-list

into a browser window, the identifier is shown as "null (ID_ALL)," which is a less than obvious response. Can this be clarified?

[iay]

Current text is something like this:

(heading) Result Returned
Identifiers: 1
    null (ID_ALL)

This references an implementation artifact; the query for "all entities" is represented internally as a query for a special null identifier. I'd propose changing the text to something like:

(heading) Result Returned
This result represents all entities known to the server.

Fortunately, this part of the output is generated by a Velocity template so it should be relatively easy to adjust.