comments endpoints depend on filesystem and metadata
all comments logic moved from routes.comments to services.metadata.comments
moved entry-accessible? function

This function was move to more appropriate namespace donkey.services.filesystem.exists.
moved validate-entry-accessible function

This function was move to more appropriate namespace donkey.services.filesystem.uuids.
moved logic unrelated to routing to services

The logic unrelated to routing was moved from donkey.routes.favorites to donkey.services.metadata.favorites.
favorites routes now depend on filesystem being enabled.
documented favorites
tags routes now depends on filesystem being enabled.
all business logic for tags moved to services.metadata.tags
documented tags logic
Switch id over to UUIDS.
Merge branch 'dev' of github.com:iPlantCollaborativeOpenSource/DiscoveryEnvironmentBackend into dev
CORE-5729: moved the search string to a query parameter in the user-search service
CORE-5778: modified agave-to-irods-path so that it can handle agave:// URLs
CORE-5772: bumped the compatible database version;
CORE-5772: added a missing foreign key constraint
CORE-5772: bumped the compatible database version
CORE-5772: added support for jobs containing multiple steps on different systems to the database