add show_legends argument to plot_log(), Log.__init__(), update .plot_data()
add show_legends argument to plot_log(), Log.__init__(), update .plot_data()

BubuLK/sfepy,vlukes/sfepy,sfepy/sfepy,vlukes/sfepy,sfepy/sfepy,BubuLK/sfepy,rc/sfepy,rc/sfepy,sfepy/sfepy,rc/sfepy,vlukes/sfepy,BubuLK/sfepy