Fix bad AMD conversion referencing globals

Refs #12863, #17829
Fix bad ARIA roles that break JAWS 15 with deprecated EnhancedGrid

Fixes #17760.
Refactor SHA2 algorithms, add basic tests

The algorithms now share most of their implementation code, and more
importantly, they generate correct output.

Test data is taken from RFC 4321: "Identifiers and Test Vectors for
HMAC-SHA-224, HMAC-SHA-256, HMAC-SHA-384, and HMAC-SHA-512"

Fixes #18221, #17733
fix ContentPane to clean up style nodes

Clean up style nodes that are created and placed in the document head
when destroy is called on a ContentPane with renderStyles set to true
When renderStyles is true, <style> nodes are created in the head of the
document but are not cleaned up when the ContentPane is destroyed. Fixes #18175
Allow dragging hue mover of ColorPicker to update color

Fixes #17546.
Squashed commit of the following:

commit b4e2c2c831f674e300dabfc5ebaf04c221915ba1
Author: Nicola Rizzo <nicola.rizzo@gmail.com>
Date:   Sun Aug 24 18:42:15 2014 +0200

    Corrects set and get in dojox/html/ext-dojo/style.js, refs #17556
Refs #18168. dojox/mobile/deviceTheme's default theme map now sets the most recent iOS theme (ios7) when running on iOS 8