Adding dropdown menu/list, radiobutton/checkbox, popover/tooltip

Here's our dev from the last few weeks, freshly merged from tm360:master.

In the last commit, I fix popover component. I realize that the version of bootstrap 2.3.1 have been used to create the popover. 2.1.0 brings a lot of probleme this this widget. I also heard that you have a little talk with Vincent Barbin about upgrading the version to 2.3.1. I have tested with 2.3.2 and everything's fine so you can upgrade to lastest if you want.

let me know if you have questions.
Vince