Add New Tools (Adno, Universal Viewer) and Update About Page Content

[jacksayshi]

We need to enhance our toolset by adding two new tools and update the content on the About page.

Tasks:

• Add New Tools: Add two new tools, Adno and Universal Viewer, into the existing set of tools. Reference information for the tools can be found in official websites: Adno Universal Viewer

• Update About Page: Add information about RERUM playground (what it does, why it is needed), JSON vs JSON LD and Manifests to the About section of the website. Use the JSON vs. JSON-LD README for information of them. For information about JSON Manifests (reference on what a manifest might look like), visit: IIIF Cookbook.

[cubap]

https://github.com/IIIF/awesome-iiif is a great list to research for other low-hanging fruit. Viewers and annotation tools are the things to look at.