Improved water settings

[BlackYps]

• Remove unused water options
• Add toggle to copy sun color and angle from light settings to get fitting sun reflections on the water
• Add toggle to switch to advanced water (this will recalculate the light settings in the background)
• Remove clamping from RGB values
• Change sun angle terminology in light settings
• Various other minor UI improvements in the water and light settings
• Fix water coloration bleeding up on shores
• Add texture paths for water ramp and skycube
  
  

Closes #36
Closes #37

[sting-2]

I tested this on a couple of maps I know have non-standard water settings. It looks good to me. The sky reflection is much stronger in the editor than in-game. Any idea if it's feasible to get that more closely aligned?

0.8 -> in-game

this PR -> in-game

[BlackYps]

Did you observe this on any other maps? The issue seems to be that the editor and the game interpret the textures differently. Normally the cubemaps are stored with the metadata info that it is a cubemap, your custom texture does not do that. You can see the difference when loading the textures in paint.net:

Unity actually throws an error when loading your texture.
UnityEngine.UnityException: LoadRawTextureData: not enough data provided (will result in overread). This results in a white texture and the resulting intense reflections

[BlackYps]

I also added the texture paths for the water ramp and sky cube textures. They don't come with a file browser yet, but at least you can type in the path now.