fixing horizontal offset in candle bar plot's _render_icon() method for legends
fixing horizontal offset in candle bar plot's _render_icon() method for legends

ContinuumIO/chaco,ContinuumIO/chaco,burnpanck/chaco,tommy-u/chaco,burnpanck/chaco,ContinuumIO/chaco,ContinuumIO/chaco,tommy-u/chaco,burnpanck/chaco,tommy-u/chaco