* [NEW] Added a run file for starting the PGC as a separate project.
* [DEB] No longer load the format specification package. Now a part of SWI-Prolog.
* [KEYS_DB,DATAHUB_IO,EXT] Asking for keys no longer goed via registered users, since this part of the codebase is not finished yet.
* [USER_DB,SC] Disabled admin and other user registrations for now. Code is not ready yet.
Merge branch 'master' of https://github.com/wouterbeek/PGC
* [FIX] Fixed the assertion of the `Data` submodule and an alias pointing to it.
* [DATAHUB_IO,FIX] Key input is not a password (free text).
* [SERVER_EXT,FIX] Since SWI-Prolog took over the http:prefix setting from ClioPatria it is no longer allowed to (re)define it as a setting.