Verification: revises fee/honor code option-based copy
Verification: adds in browser support links, icon-based button help tips, and technical support help info
Verification: removes duplicate course start on receipt view
Verification: further revises webcam support w/in browser settings copy
Verification: revises copy and layout of the review step's confirm/next actions UI
Verification: hiding technical help copy when on requirements/prep view
Verification: further revises copy per edits/typos noted
Merge pull request #998 from edx/talbs/verification-copytweaks

Verification: Copy/Light UI Pre-Launch Edits