Added SWORD server space type.

refs #5980

Added SWORD server space type and creation of space by default.
rough work.
Fixed.
Cleanup.
Roughed out deposit endpoints.
Prepping for deposit state endpoint.
Missing template.
Reworked async download.
Reworked SWORD state endpoint.
Minor template tweak.
Minor fixes.
Moved sword logic to subdir.
Refactoring and cleanup.
Added directory padding.
More cleanup.
Added creation of transfer deposit location.
Cleaned up space/location creation.
Updated example endpoint URLs in source.

refs #5980
Cleaned up error response handling.
Added space-level service document.