This makes the icon and text a single item, so they don't split across
lines, and reduces code and messages.
Bug: 47398
Change-Id: If81313b9fe03693dcdc06d5d682f0ef9a9994f76
This adds HTML, CSS, and JS to FancyCaptcha output to refresh the image,
which requests it via a new fancycaptchareload API.
It also cleans up the Asirra class a little.
Bug: 14230
Change-Id: I4e476f32de199534c9798fc78e8490b3ef91dd45