BUG Fix order problem in legend of cumulative returns plot.
BUG Fix order problem in legend of cumulative returns plot.

raybuhr/pyfolio,chayapan/pyfolio,ChinaQuants/pyfolio,yanheven/pyfolio,YihaoLu/pyfolio,YihaoLu/pyfolio,femtotrader/pyfolio,dursk/pyfolio,quantopian/pyfolio,sketchytechky/pyfolio,dursk/pyfolio,raybuhr/pyfolio,femtotrader/pyfolio,yanheven/pyfolio,quantopian/pyfolio,r0k3/pyfolio,ChinaQuants/pyfolio,r0k3/pyfolio,sketchytechky/pyfolio