Move local arbmodel copy to arbdmodel/submodule/arbdmodel

...bdmodel/resources/two_bead_model/diffusion/p.hydropro.dat

...odule/arbdmodel/resources/two_bead_model/diffusion/run.sh

...submodule/arbdmodel/resources/two_bead_model/p0p1p2p3.dat

...l/submodule/arbdmodel/resources/two_bead_model/p1p2b2.dat

...l/submodule/arbdmodel/resources/two_bead_model/p1p2p3.dat

.../submodule/arbdmodel/resources/two_bead_model/zeroBBP.dat

.../submodule/arbdmodel/resources/two_bead_model/zeroBPB.dat

.../submodule/arbdmodel/resources/two_bead_model/zeroBPP.dat

...submodule/arbdmodel/resources/two_bead_model/zeroNBBB.dat

...submodule/arbdmodel/resources/two_bead_model/zeroNBPB.dat

...submodule/arbdmodel/resources/two_bead_model/zeroNBPP.dat

mrdna/arbdmodel/submodule/arbdmodel/segmentmodel.py

mrdna/arbdmodel/submodule/arbdmodel/ssdna_two_bead.py

mrdna/arbdmodel/submodule/arbdmodel/version.py