* start legends, not functional yet * add faq (#400) * fix bug when remove_graphic() is used (#405) * add 'Deleted' as a graphic feature (#404) * very basic adding line legends works * use OrderedDict for legend items * allow accessing legend items via Graphic, updating colors works * legend mesh resizes properly * remove legend items and reorder works * enforce all legend labels to be unique * add legends property to PlotArea * checks for Graphic name * highlight linegraphic when legend item is clicked * legend is moveable * remove weird characters that were committed for some reason * progress on legend grid placement, not yet working * max_rows works for legend * just allow max_rows kwarg for legends, no cols * line that snuck in from another branch * small changes