Make utils.py for SQL calls; redesign home menu.

*Python*
In refining __init__.py, it became necessary to organize code by
grouping any processing functions (which execute SQL queries, parse
lists, etc.) into a seperate utils.py file.

utils.py contains:
	formatPosts(), to format posts into a list of lists with 3 posts.
	getQuotes(), to get all quotes from SQL db.
	insertQuote(), to insert a quote into SQL db.
	authenticate(), to authenticate user login.

__init__.py now contains only Flask functions, which serve pages in
accordance with routes. All source is generally cleaner.

*HTML/CSS*
Redesigned menu; now, instead of a vertical bar of buttons on the
left-hand portion of the screen, buttons lie underneath the Great Books
header.

*JQuery*
Cleaned up JQuery calls by grouping similar HTML elements into classes.