Fixing front matter in Style Guide
Adding Python Inferno
Merge branch 'master' into gh-pages
Adding Access Forms lecture
Adding Access Reports lecture
Adding lecture on SQL for Access users
Adding lecture on basic debugging
Adding lecture on database structure
Adding intro to databases lecture
Add classroom lecture on loops
Add newer version of SQL for Access users lecture
Removing old version of SQL for Access users lecture
Updating links in main material page
Merge branch 'master' into gh-pages
Exclude backup files from git control
Merge branch 'master' into gh-pages

Conflicts:
	.gitignore
Adding head matter to debugger lecture
Adding head matter to style lecture
Adding head matter to lectures
Fixing links to some lectures

Lectures that were linked to from the old site as md files still
had .md extensions even though Jekyll processes these extensions
away.