removes bourbon in favour of native css grid

also needed to update the node version to get a newer version of
npm, and regenerate the package-lock because of an npm 7 issue

npm/cli#1957

.github/workflows/nevergreen.yml

@@ -39,7 +39,7 @@ jobs:
       - name: Setup Node
         uses: actions/setup-node@v1
         with:
-          node-version: 15.2.1
+          node-version: 15.3.0
 
       - name: node - dependencies
         run: npm ci

.nvmrc

@@ -1 +1 @@
-15.2.1
+15.3.0

cctray_xml_feed_mock/.nvmrc

@@ -1 +1 @@
-15.2.1
+15.3.0

develop.sh

@@ -1,4 +1,4 @@
-#!/bin/bash 
+#!/bin/bash
 set -euo pipefail
 
 kill_all() {
@@ -47,5 +47,5 @@ echo "running the server ..."
 
 wait
 
-# Proper clean up taken from this unix stackexchange post:
-# http://unix.stackexchange.com/questions/55558/how-can-i-kill-and-wait-for-background-processes-to-finish-in-a-shell-script-whe
+# Proper clean up taken from this unix stackexchange post:
+# http://unix.stackexchange.com/questions/55558/how-can-i-kill-and-wait-for-background-processes-to-finish-in-a-shell-script-whe