GPII-136: Added demo images, image descriptions, and themed versions
GPII-136: Moved descrips below imgs
Merge branch 'master' into GPII-136

Conflicts:
	demos/discoveryTool/demo.css
	demos/discoveryTool/index.html
GPII-136: Moved text descriptions of images into <details> where details are not displayed by default
Merge remote-tracking branch 'heidi/GPII-136'

* heidi/GPII-136:
  GPII-136: Moved text descriptions of images into <details> where details are not displayed by default
  GPII-136: Moved descrips below imgs
  GPII-136: Added demo images, image descriptions, and themed versions