Add a way for an organization to bulk request items

[calexity]

As a Homeless Advocacy organization When I want to request a bunch of items I need Then I want to be able to do that using Spare.

Considerations

1. How to bulk add
2. How to select sizing for bulk add

[jimthoburn]

@pmfabel here are some screenshots of the admin section that may help us with the design for the multiselect feature.

As it turns out, the application already supports a manual drop off date (an ad-hoc date that doesn’t repeat)–which is good news! :o)