Send JSON messages to Software Secure in UTF-8, without escaping

LMS: Header Logo/Brand alt Attribute Value Fix

Verification: Copy/Instruction Edits

Show order errors in page instead of in an alert.

Fix/vik/pg hotfix

Small fixes for unicode

Conflicts:
	common/lib/xmodule/xmodule/tests/test_peer_grading.py

Verification Process: Copy Changes

adjusting wording on choice expand block

Fix acceptance tests to capture images for paid cert flow

Re-enable signature checking of Software Secure postbacks

Force save of photo_id_key on upload

Wait for flash to load before trying to detect a camera

Tiny change to pull in student verification settings on aws envs

Software Secure message signing and callback

Add more certificates test for newly implemented features

Hotfix/progress 500s

Detect cameras and flash

Renzo/instrument verified cert flow