fixes for DAG renderer on chrome

rhodecode/public/css/style.css

@@ -1903,7 +1903,7 h3.files_location {
 #graph_nodes {
 	float: left;
 	margin-right: -6px;
-	margin-top: -4px;
+	margin-top: 0px;
 }
 
 #graph_content {

rhodecode/public/js/graph.js

@@ -100,7 +100,7 function BranchRenderer() {
 				
 				this.setColor(color, 0.0, 0.65);
 				
-				y = row.offsetTop-rela.offsetTop+4;
+				y = row.offsetTop-rela.offsetTop;
 				x = pad-((this.cell[0] + this.box_size * start - 1) + this.bg_height-2);
 				
 				this.ctx.lineWidth=this.line_width;
@@ -108,6 +108,7 function BranchRenderer() {
 				this.ctx.moveTo(x, y);
 
 				y += row.offsetHeight;
+				
 				x = pad-((1 + this.box_size * end) + this.bg_height-2);
 				this.ctx.lineTo(x,y+extra,3);
 				this.ctx.stroke();
@@ -117,7 +118,7 function BranchRenderer() {
 			color = node[1]
 			
 			radius = this.dot_radius;
-			y = row.offsetTop-rela.offsetTop+4;
+			y = row.offsetTop-rela.offsetTop;
 			x = pad-(Math.round(this.cell[0] * scale/2 * column + radius) + 15 - (column*4));
 		
 			this.ctx.beginPath();