Storage service URL now configurable

Updating dashboard settings code to be more flexible, and added a form
to configure storage service URL.  Dashboard settings can now be more
than just booleans.  Also removed link to storage service from the
installer page, since we don't know the storage service URL at that
point.
Display dashboard UUID and storage service URL in installer

Display pipeline UUID in installer, and give user the option to set the
storage service URL.  If accept defaults, set the storage service URL to
the one provided and create default Locations.  Otherwise, just register
the Pipeline (with no error if it fails), and open the storage service
in a new window.

refs #5259
AIP storage locations pulled immediately before chosen

refs #5440

Instead of Store AIP Location getting choices from a pre-built
MicroServiceChoiceReplacementDic, Archivematica queries the storage
service for a list of AIP storage locations and displays that to the
user.  A new MicroService was added to do the query.  If no storage
locations can be retrieved, goes back to the 'Store AIP?' MicroService.