Fix all pages that use the image uploader and improve the component

[joaodiaslobo]

Check for existing issues

• Completed

Describe the bug / provide steps to reproduce it

#536 updated the component but forgot to update all pages that use it.

• Add a default icon to the component and a default class, currently, they are both required and shouldn't be.
• Make the "type" argument actually be called "memory_unit" and add a default value.

What browsers are you seeing the problem on?

No response

If applicable, add screenshots to help explain present your vision of the bug

No response