Merge pull request #180 from davegw/refactor

Revise navbar, submenu and page styles
Revamp homepage/log-in
Add logo to side menu
Merge pull request #183 from davegw/feat/homepage

Revamp homepage and add image and styling to side-menu
Add logo to app
Merge pull request #184 from davegw/feat/homepage

Add logo image to app
Remove unused audio analyser
Place audio visualizer into separate module