Implement boundary conditions about rwcdti

[janniklasrose]

I would argue that if you select the block geometry type, you implicitly select periodic boundary conditions for that block. I would therefore say that there is no need to a new config parameter and full should aways reflect when a walker gets to the LxLyLz bounding box.

• If you want an infinite domain, either specify a practically infinite domain of cells or use a transform if you can't afford to do that.
• If you want a finite domain, use a full geometry of appropriate LxLyLz.

As a side note, it might be good to verify that the bounding box LxLyLz fully contains the geometry, otherwise we get weird behaviour. Although that could also be left to the user.

[janniklasrose]

Uncomment and complement the below code with a suitable if statement based on substrate.boundary:

RWcDTI/+MonteCarlo/@ParticleWalker/private/one_dt.m

Lines 52 to 53 in 2a8f96e

	% ENABLE if the particles cannot leave the bounding box
	%dxdydz(:) = Geometry.reflect(dxdydz, intersectInfoBB.vertices);