This doesn't use the server's built-in ability to accept multiple URLs
per API request.
It behaves the same as regular uploads, in that it executes one API call
per file, simultaneously.
I figured this is a better implementation to shift queues faster.
---
Fetch error from URL uploads due to exceeding size limit will no longer
be logged in server's console.
Clients will also see better formatted error message for URL uploads'
file size limit errors.
---
Bumped dependencies:
knex: 0.20.2 -> 0.20.3
systeminformation: 4.15.3 -> 4.16.0
Bumped v1 version string
