fixed two issues in IE compatibility:
1. setData. Force to use TEXT instead of ID/NAME
2. Identify IE browser to make drop_window work both in IE and Chrome

	modified:   css/designtool.css
	modified:   designtool.html
	modified:   js/designtool.js
save virtual sensors + list them in the left pannel
feature: show red/green status

	modified:   css/designtool.css
	modified:   designtool.html
	modified:   js/designtool.js
merged with gh-pages.

Merge branch 'gh-pages' of https://github.com/oscaralvaro/sn-visualization into composition

Conflicts:
	css/designtool.css
	js/designtool.js
modernizr
Merge branch 'gh-pages' of https://github.com/oscaralvaro/sn-visualization into composition
Cleaned the code
Escape check
Uppercase for the virtual sensor name
Feedback on saving
new custom name
Merge branch 'gh-pages' of github.com:oscaralvaro/sn-visualization into add-context-menu

Conflicts:
	designtool.html