Fix outdated dependencies and NPM audit warnings (#334)

- deps update
- package lock update
- minor code changes to align with updated libraries

/cc @daxeh

Fixes #333

package.json

@@ -41,7 +41,7 @@
         "express-session": "1.17.1",
         "express-validator": "6.9.2",
         "fbgraph": "1.4.4",
-        "lodash": "4.17.20",
+        "lodash": "^4.17.21",
         "lusca": "1.6.1",
         "mongoose": "5.11.15",
         "nodemailer": "6.4.17",
@@ -64,9 +64,9 @@
         "@types/express": "4.17.11",
         "@types/express-flash": "0.0.2",
         "@types/express-session": "1.17.3",
-        "@types/jest": "26.0.22",
+        "@types/jest": "^26.0.23",
         "@types/jquery": "3.5.5",
-        "@types/lodash": "4.14.168",
+        "@types/lodash": "^4.14.170",
         "@types/lusca": "1.6.2",
         "@types/node": "14.14.25",
         "@types/nodemailer": "6.4.0",
@@ -84,12 +84,12 @@
         "chai": "4.3.0",
         "concurrently": "6.0.2",
         "eslint": "7.19.0",
-        "jest": "26.6.3",
-        "nodemon": "2.0.7",
+        "jest": "^27.0.6",
+        "nodemon": "^2.0.7",
         "sass": "1.32.6",
         "shelljs": "0.8.4",
         "supertest": "6.1.3",
-        "ts-jest": "26.5.0",
+        "ts-jest": "^27.0.3",
         "ts-node": "9.1.1",
         "typescript": "4.1.3"
     }