Finalize routing, utils functions. Update config.

Add:
	templates/(post, profile, error, query).html
		-all templates necessary for rudimentary functionality;
		contain only basic inheritance code.

	config.py
		-add SECRET_KEY var; used by app.py to allow session
		use.

	utils.py
		-add query function, amongst others required
		for basic use.

Rea:
	app.py, utils.py
		-add documentation/commenting, to guide further work.