MainFrame: don't auto-zoom while aero-snapped
MainFrame: adjust auto-zoom logic

Refactoring, minor tweaks to snap persistence, and reworked
EC_VIDEO_SIZE_CHANGED graph event handling.

Refs #3704
Add new color button control
Use new color button control
PPageCapture: change controls z-order

Fixes #4238
WebUI: Cleanup.
WebUI: only make available to global scope the functions we need to access.
Use AtlEscapeUrl/AtlUnescapeUrl to do URL encoding/decoding.

This is now available outside of ATL Server. It avoids using our incomplete URL encoding function.
Readme.md: switch to SVG badge.
version.h: Base nightly status on revision number.