1) Removed Models entity.
2) CRUD for experiments.
3) Database cleanup.
4) Useless entities removed.
5) Implemented service layer.
6) DAOs - DTOs cleanup.

1) Disabled spring boot framework logs.
2) Added 2 logs at every endpoint, when entering and returning, with useful information.
3) Unified the logs output.

Updated getExperiment so an experiment can be accessed in two cases: 1. If it is shared to everyone 2. If it is not shared only the owner can access it. If none of the above is the case it will return a UNAUTHORIZED Http Status.