Reorganize codebase

In order to make the relay easier to work on, I'm making a ton of changes.

• General:

  • Web views have been moved into their own file as views.py
  • Processing functions have been moved into processors.py
  • The 'request' function was created for making GETs and POSTs and put in misc.py
  • All functions in http_signaturese where moved into misc.py
  • Directly import the logging module instead of importing from logging.py
  • Set the log level via 'LOG_LEVEL' environmental variable
  • Use 'X-Forwarded-For' header to determine remote IP address for access log
  • DB and Config are attached to an aiohttp.web.Application in order to set the config path via cli
  • If installed via pip, the relay can be ran via activityrelay

• Management:

  • No need to call relay.manage
  • Commands to manage banlists and whitelist
  • Setup command to configure a new server

• Routes:

  • Only enable '/stats' route and aiohttp.TraceConfig if the logging level is set to DEBUG
  • Treat 'POST /actor' as an inbox so only one url needs to be used for all software

• Docker:

  • Moved relay to /opt/activityrelay and data to /data
  • Created docker.sh script for easy management

• RelayConfig: a class that manages loading and saving of relay.yaml

  • Access to config options as attributes or dict items
  • Functions to check if an instance is banned or whitelisted
  • Properties for various urls used throughout the relay (actor, inbox, and keyid)
  • If a database file is not specified, it will be named after the config file

• RelayDatabase: class for db management

  • Removed the public key from the database since it can be generated on startup
  • Properties for public and private keys as string (lowercase) and RSA (uppercase) objects
  • Save to disk when adding or removing an inbox instead of every 30 seconds