Create basic tests for app and services

[niczem]

We do not have an automated test for the basic functionality of the application which makes the validation of merge requests a quite sophisticated task. To speed up the validation tests are urgently needed.

• [ ] Check linting and syntax

Those tests should include E2E tests for:

• [ ] login on the admin site and rendering of the capture/index.php
• [ ] login on the analysis site and rendering of analysis/index.php
• [ ] creating a new test bin
• [ ] importing a bin
• [ ] exporting a bin