More edits to Wavelet lab. Commented out some sections, expanded image
compression section.
Further revisions to the wavelet lab. Included new figures, modified
solutions file a bit, expanded and pruned.
Merge branch 'develop' into wavelet_fbi
UPdated the lab, updated images, updated solution file, updated plot file.
Added a citation for the fingerprint image.
Added mandrill images.
Included image attributions.
Merge pull request #722 from abefrandsen/wavelet_fbi

Wavelets!