consolidating TaskConfigs

3 upload DIP Tasks all use the same 'move to uploadedDIPs' task now.
More cleanup of TaskConfigs for DIP Upload
identifyFileFormat: improve error messaging
Fixed METS file for AICs

refs #5883

Added metadata/ to the createMETS2 script, and added a check if the
directory exists before adding it to the structmap.  Also created a new
StandardTasksConfig for creating METS for an AIC that doesn't include the
amdSec.  Added the AIC METS file to Derivations, so it would work with
createMETS2.

Converted createAICMETS and createPointerFile to use
archivematicaXMLNamesSpace.  Renamed dctermsNS to dcNS, and removed unused
dcNS.
Enable searching of AIPs by isPartOf

refs #5898

Added isPartOf and AICID to fields specially indexed for 'aips' and
'aipfiles'.  Parse the data to populate those fields out of the METS file.
Added options to drop-down menu to search by those fields.

Converted some functions to use namespaces in xml searches.
AIC identifiers and isPartOf have AIC# prepended

refs #5803

Updated the metadata forms for AICs and AIPs to prepend 'AIC# ' where
needed.  Since DublinCore metadata in createAICMETS uses the createMETS2
function, removed get_aic_info from createAICMETS.  Updated display text
for searching on isPartOf.
Index AIC METS file

refs #5898

When indexing an AIP/AIC, index files fileGrp USE='metadata' in addition to
'original'.  Since metadata files never have an amdSec, parse the UUID from
the file ID.
Updated comment on how ElasticSearch searches