Improvements after presentation

## Feature description

Any feature or improvement done to the deployment after the presentation.

* Guillermo :
* [Share routes with groups of friends](https://github.com/Arquisoft/viade_en2b/issues/241)
* Clara:
* [Manage permissions of comments](https://github.com/Arquisoft/viade_en2b/issues/215)
* [Improve toast manage](https://github.com/Arquisoft/viade_en2b/issues/216)
* Andrés:
* [Add end-to-end tests to master branch](https://github.com/Arquisoft/viade_en2b/pull/238)
* [Fix point 6 in the documentation](https://github.com/Arquisoft/viade_en2b/pull/237)
* [Add information about using the app with Docker](https://github.com/Arquisoft/viade_en2b/pull/244)

Review the linked issues 241, 215, and 216, plus pull requests 238, 237, and 244, to identify whether any work remains. This issue has no single file, test, or entry point named; it is complete only when a specific post-presentation improvement is selected and its corresponding work is finished.

Written by the indexing model from the issue text.