bugfix for 2 recenty reported neighbor issues, also a ReaxFF fix species issue

doc/src/pair_yukawa_colloid.txt

src/QEQ/fix_qeq.cpp

src/USER-DPD/nbin_ssa.cpp

src/USER-DPD/npair_half_bin_newton_ssa.cpp

src/USER-OMP/npair_full_bin_ghost_omp.cpp

src/USER-OMP/npair_full_bin_omp.cpp

src/USER-OMP/npair_full_multi_omp.cpp

src/USER-OMP/npair_half_bin_newtoff_ghost_omp.cpp

src/USER-OMP/npair_half_bin_newtoff_omp.cpp

src/USER-OMP/npair_half_bin_newton_omp.cpp

src/USER-OMP/npair_half_bin_newton_tri_omp.cpp

src/USER-OMP/npair_half_multi_newtoff_omp.cpp

src/USER-OMP/npair_half_multi_newton_omp.cpp

src/USER-OMP/npair_half_multi_newton_tri_omp.cpp

src/USER-OMP/npair_half_respa_bin_newtoff_omp.cpp

src/USER-OMP/npair_half_respa_bin_newton_omp.cpp

src/USER-OMP/npair_half_respa_bin_newton_tri_omp.cpp

src/USER-OMP/npair_half_size_bin_newtoff_omp.cpp

src/USER-OMP/npair_half_size_bin_newton_omp.cpp

src/USER-OMP/npair_half_size_bin_newton_tri_omp.cpp