Fixed multi-usernames, Added logger

Logging.py
+Created logging software for server and client references (also created
directories)

Main.py
+implemented a logger

Client.py
+re-named defineServer to be more clear and to pass log objects to class
+implemented logging system

server.py
+implemented a logger

ServerHandler.py
~Renamed hostProcessor class to HostProcessor
+Added a logging system
+Added a classmethod for passing logger objects into the HostProcessor
~Fixed exception handling for if a name is re-used (not based off of
amount of users in chat room now), and made all usernames that start
with the word "user" off-limits
~Fixed potential problems with usernames starting with " " or usernames
< 2 characters long (must be 2 or larger characters long and cannot
start with a space.)

.gitignore
+Added file telling program to ignore .log files