update header and footer: tool selector, repo link, support email address, job summary, citation

[matthewberry]

No description provided.

[KastanDay]

What's the value of:

• support email address
• Job summary
• Citation

[KastanDay]

Support address for chemscraper frontend: [email protected]

[KastanDay]

citation

 @misc{shah2023chemscraper, 
     title={ChemScraper: Graphics Extraction, Molecular Diagram Parsing, and Annotated Data Generation for PDF Images}, 
     author={Ayush Kumar Shah and Bryan Manrique Amador and Abhisek Dey and Ming Creekmore and Blake Ocampo and Scott Denmark and Richard Zanibbi}, 
     year={2023}, 
     eprint={2311.12161}, 
     archivePrefix={arXiv}, 
     primaryClass={cs.CV} 
 } 
 Or find us on Arxiv: https://arxiv.org/abs/2311.12161