Upgrade NPM and avoid duplicate deps

package.json

@@ -63,15 +63,13 @@
     "jed": "1.1.1",
     "jquery": "3.2.1",
     "jsdoc": "^3.5.5",
-    "jshint": "^2.9.4",
     "lerna": "^3.4.3",
-    "lodash": "4.17.10",
     "lodash-template-loader": "^2.0.0",
     "lodash-template-webpack-loader": "jcbrand/lodash-template-webpack-loader",
     "long": "^3.1.0",
     "minimist": "^1.2.0",
     "moment": "~> 2.19.3 ",
-    "npm": "^5.7.1",
+    "npm": "^6.4.1",
     "pluggable.js": "2.0.0",
     "po2json": "^0.4.4",
     "requirejs": "2.3.5",
@@ -79,11 +77,7 @@
     "sinon": "^2.1.0",
     "sizzle": "^2.3.3",
     "snabbdom": "0.7.1",
-    "strophe.js": "1.3.0",
-    "strophejs-plugin-ping": "0.0.3",
     "strophejs-plugin-register": "0.0.1",
-    "strophejs-plugin-rsm": "0.0.2",
-    "twemoji": "^11.0.1",
     "uglify-es": "^3.0.24",
     "urijs": "^1.19.1",
     "wait-until-promise": "^1.0.0",

src/headless/package.json

@@ -26,7 +26,7 @@
     "backbone.browserStorage": "0.0.4",
     "es6-promise": "^4.1.0",
     "filesize": "^3.6.1",
-    "lodash": "4.17.10",
+    "lodash": "^4.17.10",
     "moment": "~> 2.19.3 ",
     "pluggable.js": "2.0.0",
     "strophe.js": "1.3.0",