Can now adjust color of group node resize icon.
Changed header label rendering to always be vertically centered.
Changed group node style.
Changed rename text field style.
Updated Node Editor Preferences window. Better separators. Added additional appearance options.
Removed Rounding in GridToWindowPositionNoClipped() (and DrawGrid()) which was originally meant to fix UI Sharpness. But it did not have impact in my case and without it made panning feel much smoother.
