First commit for a new HTTP-based architecture

We are going to use the Flask framework for both server and client.
This is just a prototype. Actual documentation will follow later.
Reintegration of peewee
Refactoring: changed Clients into Workers
Added workers and jobs listing in server
Refactoring: renaming of jobs and orders

- jobs are now shots
- orders are now jobs
Basic code for jobs creation
More jobs creation

Next step is to move this into a generic purpose function
Update to Jobs model and basic job assignemtn
Refactoring: united PORT with IP_ADRRESS variables

Also started working on a send_orders function
Improved job selection query
Bug fix: added commas in a dictionary

Test before commit!
Refactoring: moved code to create_jobs function
Refactoring: created a dispatch_jobs function
Refactoring: renamed send_orders to http_request
Refactoring: create_jobs is now an independent function
Refactoring: moved some jobs code into jobs.py
Refactoring: moved http_request into utils.py
Code cleanup

Removing unused functions.
Refactoring: created a workers module
Started dashboard app development

Also updated README.md and renamed function in server app.