docs: Fix typo
docs: Fix bad reference
astakos: Provide smarter defaults for project_default

When registering a resource, set project_default to zero if the
resource is meant to be api-visible, otherwise to infinite.
docs: Mention project default in the admin guide

Also rephrase system default section in install guide.
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
deploy: Update for >=vncauthproxy-1.5

Use vncauthproxy-passwd to generate the users file and provide
snf-vncauthproxy with the certficates needed for Websockets.
Merge branch 'release-0.16-admin-ui-fixes' of https://github.com/AthinaB/synnefo into release-0.16
snf_django: Handle invalid filter by expression

Handle case of invalid expression in the '--filter-by' option of
management commands by raising a 'CommandError' with a descriptive
exception message.