Ref: Removed shader language, correct floating origin in shaders and other fixes

[emyfops]

This pull request aims to try to improve the monstruous rendering system by:

• Removing the custom shader language.
• Fixing rendering at large distances
• Simplifying texture loading and handling

And there may be more changes in the near future.

[beanbag44]

I seem to be getting floating point impression problems at the nether world border at least with dynamic renders

[emyfops]

I seem to be getting floating point impression problems at the nether world border at least with dynamic renders

mmghmgnh,,

[beanbag44]

static too

[emyfops]

Its not done