asyncified setting and verifying the password

Signed-off-by: Claudius <opensource@amenthes.de>

package.json

@@ -58,7 +58,6 @@
     "jquery-ui": "^1.12.1",
     "js-cookie": "^2.1.3",
     "js-sequence-diagrams": "git+https://github.com/codimd/js-sequence-diagrams.git",
-    "wurl": "^2.5.3",
     "js-yaml": "^3.13.1",
     "jsdom-nogyp": "^0.8.3",
     "keymaster": "^1.6.2",
@@ -111,7 +110,7 @@
     "readline-sync": "^1.4.7",
     "request": "^2.88.0",
     "reveal.js": "~3.7.0",
-    "@mlink/scrypt": "^6.1.2",
+    "scrypt-kdf": "^2.0.1",
     "select2": "^3.5.2-browserify",
     "sequelize": "^3.28.0",
     "sequelize-cli": "^2.5.1",
@@ -132,6 +131,7 @@
     "viz.js": "^1.7.0",
     "winston": "^3.1.0",
     "ws": "^6.0.0",
+    "wurl": "^2.5.3",
     "xss": "^1.0.3"
   },
   "resolutions": {