Do not set Landed to true.

It seems this is the source of explosions for certain craft. I can now
build one of my wide-base cranes on Minmus.
Make the recycler range based on the part.

When the recycler is part of a base, especially as a pad, the location of
the center of recycling range can get rather unintuitive when the base's
center is used rather than the recycler's center.
Add my recycle bin part.

No part.cfg yet, and it won't work until I get the code working, but this
should be more realistic than the magic pad :)

Recycling_Bin_empty_with_words.svg is from openclipart.org and is
apparently public domain.
Shrink the trigger collider a little.

This ensures that it doesn't touch the colliders of the bin.
Ignore blender backup files.
Various fixes on the recycle bin model.

Get the tag and layer right, and add an edge-split modifier to keep the
flat surfaces flat.
Do up a config file for the recycle bin.
Eliminate some dead code
Implement the code needed for the recycle bin.

Any (and I do mean any) vessel that enters the bin will be recycled. The
definition of entering the bin is hitting the part's trigger collider. The
current bin model has the collider coming above the top of the bin, so be
careful.
Remove support for the distance recycler.

It was rather unrealistic. The removal may prove a little inconvenient for
launch clamps, but there are ways to abuse the trigger based recycler.