made database shape box a rectangle

lib/network/modules/components/nodes/shapes/Database.js

@@ -67,12 +67,7 @@ class Database extends NodeBase {
   }
 
   distanceToBorder(ctx, angle) {
-    this.resize(ctx);
-    var a = this.width / 2;
-    var b = this.height / 2;
-    var w = (Math.sin(angle) * a);
-    var h = (Math.cos(angle) * b);
-    return a * b / Math.sqrt(w * w + h * h);
+    return this._distanceToBorder(ctx,angle);
   }
 }