fixed graph alignment and uninstalled acorn as extension dependency

Author: nusanam

package-lock.json

@@ -59,8 +59,6 @@
     "webpack-cli": "^3.3.6"
   },
   "dependencies": {
-    "acorn": "^7.1.0",
-    "acorn-jsx": "^5.0.2",
     "bower": "^1.8.8",
     "d3": "^4.13.0",
     "d3-tip": "^0.9.1",