[Bug] Upload multiple can't hold many items if it's VARCHAR

[tabacitu]

Bug report

What I did:

Tested the Monster's "upload_multiple" input with a few of files at one (3-6). Uploaded 1-2. Saved. Then uploaded 4-5. Saved.

What I expected to happen:

They get saved / replaced.

What happened:

The input got cleared entirely.

What I've already tried to fix it:

After a few hours of looking at the JS and PHP, I realized it's a DB issue :-) The db column is VARCHAR so it can only hold 255 characters - I was trying to plug in a lot more. Changing it to TEXT fixed it for me, but it should also:

• [ ] be fixed in the main demo migration (to prevent user frustration)
• [x] be mentioned in the upload_multiple documentation