Use same algorithm for sorting comments as Condenser
Use same algorithm for sorting comments as Condenser

This follows Steemit algorithm for sorting comments granting 1:1
mapping. It doesn't work for comments that have totalPayout equals 0,
and net_rshares equals to 0, so there is nothing to compare.

busyorg/busy,busyorg/busy,ryanbaer/busy,ryanbaer/busy