Add Attachment Mapping File support #4766

Is your feature request related to a problem? Please describe.

Yes, the catalog number field is a text field in several of the UMich databases. This enables support for the non-number characters they store in the field, like the UMMZI- suffix in this case.

In S6, we have been using an attachment mapping file which describes the catalog numbers and attachment filenames explicitly. I'm attaching an example here for reference. If a similar system could be added to S7, that would be great.

In this example, this mapping file is necessary to work around an issue with the catalog number field being formatted.

From @realVinayak:

Yes, unless the catalog number field itself is formatted (has a formatter other than text), then multiple records would not be matched. Specify 6 "got around" the issue via the mapping file

Here's an example file sent to us by Garth at UMich:
Example mapping file:

Catalog Number	Attachment Name
UMMZI-90126	UMMZI-90126.jpg
UMMZI-90159	UMMZI-90159.jpg
UMMZI-90171	UMMZI-90171.jpg
UMMZI-90175	UMMZI-90175_1.jpg
UMMZI-90175	UMMZI-90175.jpg
UMMZI-90176	UMMZI-90176_1.jpg
UMMZI-90176	UMMZI-90176.jpg
UMMZI-90179	UMMZI-90179_1.jpg
UMMZI-90179	UMMZI-90179.jpg
UMMZI-90209	UMMZI-90209_1.jpg
UMMZI-90209	UMMZI-90209.jpg
UMMZI-90231	UMMZI-90231_1.jpg
UMMZI-90231	UMMZI-90231.jpg
UMMZI-90234	UMMZI-90234_1.jpg
UMMZI-90234	UMMZI-90234.jpg
UMMZI-90237	UMMZI-90237.jpg
UMMZI-119907	UMMZI-119907_1.jpg
UMMZI-119907	UMMZI-119907.jpg
UMMZI-119908	UMMZI-119908_1.jpg
UMMZI-119908	UMMZI-119908.jpg

Describe the solution you'd like
It should be implemented as it was in Specify 6.

Describe alternatives you've considered
They tried to import using the batch attachment uploader but could not indicate multiple images associated with a single specimen due to the formatting for that field.

Reported By
Garth at University of Michigan