fixed decimal tick on overview of commit data

rhodecode/templates/summary/summary.html

@@ -310,7 +310,7 b''
 			    bars: {show:true,barWidth: 2,},
 			    shadowSize: 0,
 			    xaxis: {mode: "time", timeformat: "%d/%m/%y",},
-			    yaxis: {ticks: 3, min: 0,},
+			    yaxis: {ticks: 3, min: 0,tickDecimals:0,},
 			    grid: {color: "#999",},
 			    selection: {mode: "x"}
 			};