major rework of ythdd.py, new method for setting config in ythdd_globals.py

- slightly modified config, api keys now have the value "CHANGEME"
- requirements.txt has new dependency, flask apscheduler
- ythdd.py has been reworked, support for argument parsing has been added, code is now split into functions
- ythdd_api_v1.py features real uptime as well
- ythdd_db.py is no longer dependent on ythdd_globals.py
- ythdd_globals.py has a method for setting config and getting it from configfile variable

ythdd_db.py

@@ -1,14 +1,14 @@
 #!/usr/bin/python3
 from flask_sqlalchemy import SQLAlchemy
 import toml
-import ythdd_globals
+# import ythdd_globals
 
-database_file = ythdd_globals.config["general"]["db_file_path"]
+# database_file = ythdd_globals.config["general"]["db_file_path"]
 global db
 
 #db = SQLAlchemy()
 
-def initDB(app):
+def initDB(app, config):
 	db = SQLAlchemy(app)
 
 	class LocalUsers(db.Model):