Modularize and improve code structure (1/T)

[AlphaV7]

• store all config in a separate file at the server
• add utility to make API calls
• store url and url config in a separate file
• define utility functions used at client in a separate file

The urls should be stored in a separate place. Hard-coding urls leads to greater dependencies and will lead to unmanagable code. functions that can be used again should be stored as a utility