Allow empty widget name

Add owner validation

Removed adminLevel from users

Simulations are the container for simulation models

Rename app.js back to server.js.

Rename server.js to app.js.
Add 404 and error handling middleware.

Add cors package.
Add /users/me route to identify from auth token.

Add UML class and use-case diagram (StarUML application).
Add admin user from config if no admin user found.

The higher the level, the more rights a user has
Fix error not checking password in authenication

User passwords are stored with bcrypt hash & salt.
The authentication token is stored in the 'x-access-token' header.

For tests open mongodb port and access directly (without docker)