replaced uglifyjs to terser, updated autoprefixer & fixed npm audits

plugins/icheck-bootstrap/package.json

@@ -1,27 +1,31 @@
 {
-  "_from": "icheck-bootstrap",
+  "_args": [
+    [
+      "icheck-bootstrap@3.0.1",
+      "/Users/rejack/Projekte/GitHub/REJack/AdminLTE"
+    ]
+  ],
+  "_from": "icheck-bootstrap@3.0.1",
   "_id": "icheck-bootstrap@3.0.1",
   "_inBundle": false,
   "_integrity": "sha512-Rj3SybdcMcayhsP4IJ+hmCNgCKclaFcs/5zwCuLXH1WMo468NegjhZVxbSNKhEjJjnwc4gKETogUmPYSQ9lEZQ==",
   "_location": "/icheck-bootstrap",
   "_phantomChildren": {},
   "_requested": {
-    "type": "tag",
+    "type": "version",
     "registry": true,
-    "raw": "icheck-bootstrap",
+    "raw": "icheck-bootstrap@3.0.1",
     "name": "icheck-bootstrap",
     "escapedName": "icheck-bootstrap",
-    "rawSpec": "",
+    "rawSpec": "3.0.1",
     "saveSpec": null,
-    "fetchSpec": "latest"
+    "fetchSpec": "3.0.1"
   },
   "_requiredBy": [
-    "#USER",
     "/"
   ],
   "_resolved": "https://registry.npmjs.org/icheck-bootstrap/-/icheck-bootstrap-3.0.1.tgz",
-  "_shasum": "60c9c9a71524e1d9dd5bd05167a62fef05cc3a1b",
-  "_spec": "icheck-bootstrap",
+  "_spec": "3.0.1",
   "_where": "/Users/rejack/Projekte/GitHub/REJack/AdminLTE",
   "author": {
     "name": "Hovhannes Bantikyan"
@@ -29,8 +33,6 @@
   "bugs": {
     "url": "https://github.com/bantikyan/icheck-bootstrap/issues"
   },
-  "bundleDependencies": false,
-  "deprecated": false,
   "description": "Pure css checkboxes and radio buttons for Twitter Bootstrap.",
   "files": [
     "icheck-bootstrap.css",