* uses zxcvbn
* outsourced to separate jquery plugin
* async loading
* hide strength meter if input is empty
* feedback if user enters weakest password
* fade in and out
* show tipsy with strength
* Opera 12, IE8-10, FF 23, Chromium 29
* for IE9 the nav bar was too narrow
* for other IEs the width of each app element was to wide and
cause the horizontal scoll bar - now this content is hidden like
before this PR