Clean Up Task: Technical debt clean up

[LHMoritz]

User story

1. As a software developer
2. I need the following things to get fixed
3. So that I can continue implementing features without running into existing problems.

Acceptance criteria

• Criterion 1: All TODOs are analysed and actions are taken

TODOs:

• Switch to decimal numbers (frontend, backend, analyzer) (have noticed there are also some backups < 1 MB)
• Check for duplicate alarms in the backend
• alarmLimit should be optional QueryParam according to REST style
• We need an env variable in the backend to activate/deactivate the mailing, otherwise it's super annoying
• Actually, the analyzer should only check new backups that have not yet been checked, but how do we do that?
• Do not only import FULL backups, so that alerts can also be linked to them. But do not deliver them to the frontend

[flo0852]

AlertType Table saves date of last backup which was checked by this type analysis + provide Endpoint to call for analyzer