Make all template css and js scripts optional

[vsoch]

A user is possibly wanting to embed the similarity search in his or her page, in which case two versions of something like bootstrap or jquery is not ideal. I've modified similarity search interface to take a custom "remove_scripts" argument that corresponds to a tag in the template for rows that include the scripts. For this TODO:

• I need to add these tags to every single template
• I need documentation to tell a user what tags are removable