Add File Upload button to navbar

[lukemalinowski]

Add the file upload button to the navbar

the star in the navbar currently could be replace by a vuesax file upload component, see here for a guide on how to do a file upload component more generally
https://scotch.io/tutorials/how-to-handle-file-uploads-in-vue-2

And here's the vuesax component https://pixinvent.com/demo/vuesax-html-admin-dashboard-template/html/ltr/vertical-menu-template/ext-component-file-uploader.html