Update dependency datatables.net to v2

Author: renovate[bot]

package-lock.json

@@ -28,7 +28,7 @@
     "brace": "^0.11.1",
     "cropperjs": "^1.5.12",
     "datatables-bootstrap3-plugin": "^0.6.0",
-    "datatables.net": "^1.12.1",
+    "datatables.net": "^2.0.0",
     "datetimepicker": "^0.1.39",
     "dropzone": "^5.9.3",
     "easymde": "^2.18.0",