fixed: KETCHER-337 (The switching of the bonds by clicking with Single Bond tool should be cyclic)
fixed: KETCHER-337 (The switching of the bonds by clicking with Single Bond tool should be cyclic)

ggasoftware/ketcher,ggasoftware/ketcher,ggasoftware/ketcher,ggasoftware/ketcher,ggasoftware/ketcher,ggasoftware/ketcher