ui: get rid of enzyme

[ioannistsanaktsidis]

NOTE: This issue will be addressed in multiple PRs as it is massive!

Description

We are heavily using enzyme in our tests. Enzyme is dead and is actually blocking the upgrade of React.
Nowadays we can achieve the same result by using RTL and jest. A good approach is to start first with the snapshots and continue with the rest of the tests. Another approach is to migrate slowly (per collection or whenever we touch a component, we rewrite the test). Strategy to be defined.

Work involved

• Identify migration strategy
• Identify the parts that are using enzyme
• Refactor them to use RTL with Jest

Acceptance criteria

• The tests work as before and no regression is introduced
• No use of enzyme in the project

Subtasks

• ui: remove enzyme from data collection #660
• ui: remove enzyme from institutions collection #661
• ui: remove enzyme from journals collection #687
• ui: remove enzyme from seminars collection #688
• ui: remove enzyme from experiments collection #698
• ui: remove enzyme from authors collection #699
• ui: remove enzyme from literature collection #700
• ui: remove enzyme from bibliography generator #701
• ui: remove enzyme from jobs collection #702