Separated the program into 2 files

remindmebot.py is now remindmebot_reply and ..._search.py.
-Search will only look and comment for "RemindMe!"
-reply will only reply if it's time
-Switch DBs, again. Uses MySQL instead of sqlite3 now so it can be read
and wrote by two people.
-remindmebot_reply has a 1 minute wait. Will probably increase to reduce
load.