Merge pull request #13617 from grafana/13616_phantomjs_legend

fix phantomjs render of graph panel when legend displayed as table to the right

public/sass/components/_panel_graph.scss

@@ -137,6 +137,7 @@
 
     .graph-legend-table {
       display: table;
+      width: auto;
 
       .graph-legend-scroll {
         display: table;