Add support for reordering items in a one-to-many

[grantfitzsimmons]

Is your feature request related to a problem? Please describe.
Currently, subviews with one or more records are sorted based on a specific field (be it ordinal, isCurrent, order, etc.), but there is no mechanism to reorder items visually.

Attachments cannot be reordered unless the ordinal field is added to the form. After that, the numbers must be manually edited to achieve the desired order. Alternatively, you can delete all attachments and reupload the images in the correct sequence, but you can likely already see the problematic nature of that process.

Describe the solution you'd like
Theres should be a mechanism to allow users to rearrange items in a one-to-many easily, particularly attachments, collectors, preparations, etc. where order may be important to the collection.

This could be done via a dialog with a reorderable list or via another interface mechanism I may not already be familiar with.

Reported By
Zsuzsanna at University of Copenhagen

The smaller one: is it possible to change the order of attachments, when they are displayed on the data entry form?
In some cases, multiple images are attached to the same collection object, and we have a request to provide this option, but I cannot find the way to achieve this.

If there is a duplicate, please let me know. I imagine there is already an issue but did not have luck finding one.