enrich-date should not fail on empty date field
Do not update profile with last_checked date
Remove need to for absolute URLs in profiles
Update poll_storage to use relative urls, and fix problem with couch db range queries
Update profiles to use relative paths
Merged nara-schemav3 with master

Mapping fixes
    -Added extent_transform
    -Added subject_and_spatial_transform
    -Added type_transform
    -Moved transforms that require multiple originalRecord fields
     outside of *_TRANSFORMER to prevent multiple runs.
    -Removed contributor
    -Updated is_part_of_transform
    -Removed move_dates_to_temporal
    -Added a collection transform
    -Set Record Group as collection in poll_profiles
    -Removed enrich_date, enrich_temporal_date, and
     contentdm_identify_object from NARA profile
    -Updated date_tranform and is_part_of_transform
    -Added "moving image" to DC_TYPES in enrich-type module
    -Added blacklist=None to def process_arc_all
    -Mapped subject, description, type, and isShownAt

Updated arc_group_extraction to account for both list and dictionary
instances.

    -The items are now appended to a file whose name include the collection
     id, which is then read and inserted into the collection dictionary
     prior to enrichment.
    -The collection label field is set as its title and added to COLL
     since NARA does not include collection enrichment.

Gather ARC collection info from Item file only.

    The collection metadata is gathered only from the item, rather than by
    searching for and parsing the Series file. The item _id is first set,
    then select-id sets the id as the md5 sum of _id. The collection label
    is now set in the enrich module.
NARA fixes

-Updated profile for relative paths
-Fixed rights transform
Brought implemented schema fully up-to-date with published schema

-aggregatedCHO renamed to sourceResource
-object and isShownAt are now plain URIs rather than WebResources
-sourceResource/physicalMedium is now sourceResource/format
-collection name field renamed to title
-removed isShownAt/format shredding for all profiles
-updated enrich-format module to move IMTs to hasView/format only
 if hasView exists and its format is not set
-added shredding of sourceResource/format to all profiles
-updated all unit tests
Rebased with master to include NARA merger and relative path changes.
Then merged.
Conflicts:
	profiles/artstor.pjs
	profiles/bhl.pjs
	profiles/clemson.pjs
	profiles/georgia.pjs
	profiles/kentucky.pjs
	profiles/minnesota.pjs
	profiles/scdl-charleston.pjs
	profiles/scdl-usc.pjs