Added problems to the Correlation lab, a new figure, and datasets.
Added solutions file for the Correlation lab. Made other minor changes
to the lab, including to the final problem.
Replaced "orthogonal" with "orthonormal" when refering to matrices to
match terminology in the textbook.
Merge branch 'develop' of git://github.com/abefrandsen/numerical_computing into abefrandsen-develop

Conflicts:
	Applications/CorrCovariance/plotFigs.py
A few more clarifications in the householder lab.
Replaced ^* with ^H to denote conjugate transpose.
This is to match syntax in the book.
Replaced ^H with ^\textsf{H} to match textbook.
fixed incorrect command.
Merge pull request #348 from insertinterestingnamehere/householder

Householder