Update to use NPM instead of yarn.

Port over yarn lock file to npm package lock.

Update any dependencies that have critical vulnerabilities reported by socket to use updated versions.

Author: paullinator

.gitignore

@@ -10,7 +10,7 @@
 # Package managers:
 node_modules/
 npm-debug.log
-package-lock.json
+yarn.lock
 yarn-error.log
 
 # Editors:

.husky/pre-commit

@@ -0,0 +1 @@
+npm run precommit

.npmrc

@@ -0,0 +1 @@
+ignore-scripts=true

.yarnrc

@@ -5,18 +5,14 @@
 ## Installation
 
 ```sh
-# Install Yarn
-
-    https://linuxize.com/post/how-to-install-yarn-on-ubuntu-18-04/
-
 # Install Node
 
     curl -sL https://deb.nodesource.com/setup_10.x -o nodesource_setup.sh
     sudo bash nodesource_setup.sh
 
-# Run Yarn
+# Install dependencies
 
-    yarn
+    npm install
 
 # Install CouchDB v3.1
 
@@ -36,9 +32,9 @@
 
 ## Reporting Server
 
-To launch the reports server, just type `yarn start`.
+To launch the reports server, just type `npm start`.
 
-You can also build the server code by running `yarn build`, which puts its output in the `lib` folder. You can then use `forever-service` or similar tools to install the software on your server machine.
+You can also build the server code by running `npm run build.lib` (or `npm run prepare` for a full build), which puts its output in the `lib` folder. You can then use `forever-service` or similar tools to install the software on your server machine.
 
 ```sh
 
@@ -68,4 +64,4 @@ sudo forever-service delete reportsApi
 
 ## Demo app
 
-Run `yarn demo` to launch the demo app in your web browser.
+Run `npm run demo` to launch the demo app in your web browser.