Quest clean up & display fixes

[MargoCode]

Description

Ensuring that all quests work in all 3 biomes (mainly fixing minigames, final boss summoning after mini game, and final boss defeat listener). Redesigned pause menu (currently can't see due to buttons covering it) and edited quest tracker. Plus small fixes to code style and javadocs.

Pic of pause menu: (The text colour has been changed)

Fixes / Closes #635 #614 #516

Type of change

Please delete options that are not relevant.

• [x] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [x] This change requires a documentation update

How Has This Been Tested?

• [ ] Completing all of the quests in all 3 biomes (following hints and such from quest display (open by pressing 'q' in game) as they are unlocked)
• [ ] Checking redesign of pause menu (pressing 'esc' in game)

Checklist:

• [x] My code follows the style guidelines of this project
• [ ] I have performed a self-review of my code
• [x] I have commented my code, particularly in hard-to-understand areas
• [x] I have made corresponding changes to the documentation
• [x] My changes generate no new warnings
• [x] I have added tests that prove my fix is effective or that my feature works
• [x] New and existing unit tests pass locally with my changes
• [x] Any dependent changes have been merged and published in downstream modules

[EllaBerglas]

Your pause menu doesn't work with the minigames like the current one in main. As your pull request is very late we do not have anough time ot fix it on our end. Can you please remove it from the pull request?

[EllaBerglas]

Is this what it is supposed to look like?