Deprecate the front-end JavaScript codebase

[JOO33]

To simplify the project and make it more approachable, we should go forward with @brylie's proposal to replace the current JavaScript codebase with a more standardized Django-based framework.

Original proposal from @brylie:

• deprecate the "front-end" JavaScript codebase
• use standard Django templates/views
• use something like Django Unicorn 🦄 if/when dynamic page elements are needed (we don't need a whole JavaScript framework/SPA for a few dynamic page elements)

Related tasks

• Port accounts app templates to Django template syntax #1151
• Port threads app templates to Django template syntax #1152
• Port all core templates to Django template syntax #1405

[AbhijithGanesh]

@silvarthur is this issue relevant? Can you check on this too please? Thank you

[silvarthur]

@AbhijithGanesh, I would have to understand a little more about this issue. Which files compose this Javascript codebase mentioned in the description?