Adding option showPopover
Adding functions initPopover and destroyPopover
When there is no input at all, remove error messages, verdict and set progressbar to 0% width
Create popover dependent on bootstrap3 and showPopover option.
Destroy popover dependent on bootstrap3, showPopover option and presence of a popover container
Those two libs are opt in due to performance reasons.
see http://getbootstrap.com/javascript/#popovers
Testpage for showPopover option.