task: initial url routing and templating

[tyliec]

Description

As recommended by @stefanw here, this PR introduces:

• URL pattern matching in uipa_org/theme/urls.py
• Various template overrides in uipa_org/templates/

Instructions

For anyone else looking at this PR, the way you can introduce new template overrides is as follows:

• Look at froide/templates and find the correct file/section you are trying to edit, and replicate the same structure under uipa_org/templates
• Ensure your {% block < > %} statements match the section you are trying to override

This settings code does the magic of importing any new template file automatically under the uipa_org/templates directory.

For introducing any new url routing, look at uipa_org/theme/urls.py's urlpatterns variable here: https://github.com/CodeWithAloha/uipa/blob/3288d936ef84412d43e7cd39251efecdbbd9fac1/uipa_org/theme/urls.py#L59-L60.

Example

Demo Image

[russtoku]

Awesome!