Chore/core api

This removes dependency on external directory.jar and core.jar.
Verification of a user's permission within a company is now done through the core api.
The api is called using a UrlFetch request that is credentialed with the local p12 file.
Some files that weren't being used have been removed because they referenced the deprecated jars.

@fjvallarino @EnlightenedCode Please review.  Also please enable on rvacore-test as soon as might be appropriate so that this code get some test cycles.