Address repeated code

[frinzekt]

Due to the time and priorities of stage 1, there has been some code that has been copy pasted over.

Some of them are:

• CustomFormField (inspired from the Living Lab custom field)
• EOCAccordion there are two of them at the moment. One of them is for the coordinator, and the other is for the reviewer. There needs to be a discussion on this, because fundamentally they use different states, but they use two of the same concept, namely 1. EOCCards and 2. the logic to create EOC to accordions

Additionaly:

• code that has "TODO"