Better performance

Is your feature request related to a problem? Please describe.

There are some issues/problems that makes the app Decidim slower.

Examples:

• Comments rendering slow

• Survey answers admin

• Too much maps used in different spaces

Describe the solution you'd like

Compiling all the assets: use modern frameworks, import maps.

Fewer cells, better caching, query optimization

Describe alternatives you've considered

N/A

Additional context

N/A

Could this issue impact on users private data?