improve readability of the honcho console logs in the dev environment

* colorize uwsgi and celery logs; DEBUG lines are green, WARN lines
  are yellow, ERROR lines (and tracebacks) are red
* pretty-print fact callback receiver JSON
* simplify the uwsgi log format so it's more legible

tools/rdb.py

@@ -14,6 +14,7 @@ from celery.contrib.rdb import Rdb
 
 import cmd
 import contextlib
+import logging
 import os
 import pprint
 import re
@@ -27,6 +28,8 @@ from pygments import highlight
 from pygments.lexers import PythonLexer
 from pygments.formatters import Terminal256Formatter
 
+logger = logging.getLogger('awx')
+
 
 @contextlib.contextmanager
 def style(im_self, filepart=None, lexer=None):
@@ -158,6 +161,9 @@ class CustomPdb(Rdb):
         )
         return (sock, port)
 
+    def say(self, m):
+        logger.warning(m)
+
 
 CustomPdb.complete = rlcompleter.Completer(locals()).complete