Post-Jam Fixes and Changes

Fixes and changes we've made post-jam 

Changelog:

• Audio Sliders now work on a logarithmic scale.
• Added render layers back in and assigned some sprints to them.
• Minor UI changes.
• We now have a binary saving system.
• Volume settings should save now.
• Worked to reduce scene dependencies
• Pause Menu Manager is now a ScriptableObject.
• Pause Menu is now loaded dynamically into any scene whose name doesn't contain "Menu_"
• Pause Menu includes how to play and settings.
• The Game Manager now knows the first level by build index.
• Updated Pause Menu prefab
• Custom inspector for Moonlight Behaviour
• Added Unit Tests for Character Movement, Werewolf Movement, and Moonlight Behaviour
• Added Namespaces to the codebase
• Updated to Unity 2019.4.8f1 from Unity 2019.4.3f1
• Updated included packages
• Fixed Issue #7 - Volume Resetting on Pause Menu