Testimonial Section Cleaned Up

Created a new testimonial container section and (hopefully) redid the
bem right.
Code cleanup

From suggestions here:
https://github.com/imrsn/chair/commit/ab48b120a76a174e490da5cf02d836f65b
8817bf#commitcomment-8345487
Forms / Buttons changed to Anchors

Changed the forms and buttons to anchors
Heading Styling

Beginning the heading styling. Body bg and fonts set, main nav heading
started