admin-ui: Fix rendering bug

There was an invalid path of icon-fonts files and Firefox browser
couldn't show the icons that we 've used.
admin-ui: Fix bugs regarding arrow-buttons in tables

In some cases, the arrow button that is included in table rows was
not clickable. That was happening because the summary area was
expanding over the arrow.

With the addition of z-index property this problem fixed.

Also, in some cases, there was a shake when summary area was
expanding. This occurred from measuring the height of the span in
the arrow-button instead of the button's height.
admin-ui: Fix style bug

The table of IP history in details was getting out of the wrapper
in Firefox.
A horizontal scrollbar solves the problem.
admin-ui: Add generated css files
Merge branch 'release-0.16-admin-ui-fixes' of https://github.com/AthinaB/synnefo into release-0.16
burnin: Extend tests

Provide tests for snapshots
Small fixes