used prance to resolve the yaml file (enables file-splitting)

added global security definition to swagger.yml

added token verification stubs

added security jwtRegular to all endpoints

certificates itself are ignored for safety reasons

Used on ports :80 and :443.

Connected Cluster and Similarity functionalities

See merge request !12

- extracted security definition from swagger.yml into security.yml
- added seperate functions to verify tokens for a constant role
- added security definitions to protected endpoints

added generation of JWT tokens

added options to:
- add user
- delete user
- fetch users
- authenticate with username/password

Removed all old and unused source code, including source code from old approaches

Changed deployment script: arg has to match name exactly

Caching pip packages as suggested by Alfonso.

Just assume one large cluster for all nodes for that layer

Not using one large layer or clusterset object anymore as size is too large for storing and loading