GBL - Show page Allmaps buttons

[ewlarson]

Very basic georeferenced or not sidebar links support for GBL is here.

Some things will change as the codebase continues...

• Using GBL v4.1 because of v4.2 Vite binary issue
• Remove the inline JS
• Add Allmaps branding
• Add additional links to describe Allmaps service, improve georeferencing, etc.