[FEATURE] Provide a nice frontend for the system

[eriknovak]

Is your feature request related to a problem? Please describe.
A nice frontend would be beneficial for showing how the system works and its capabilities.

Describe the solution you'd like
The frontend would describe:

• The overview of the system (what it does, the dataset used)
• The API used for accessing the data and the functionalities
• (optional) A use-case of the capabilities

It would be developed with a simple framework for website development (jquery, ejs, etc). If required, we would use a stronger framework (e.g. react).