labels - part 1 - plus many other goodies

While I was looking around, I found the slider of the warnings and decided to replace it with jQuery UI.
I had to bring in a couple of css files from UI, dunno if it is the best way to go or if grab everything is better or... opinions?

https://github.com/emanuele45/Dialogo/commit/79d7fe6f7595ce663e64f29077945fb2519145e9