fixes #2277 - adds spice html5 support

This also adds a newer version of the web socket proxy (where we
probably need to use an external package instead of vendor it).

we still allow users to use the old XPI based spice client (which would
ensure end to end security as well) via a 'new window' button....

fixes #2273 - authorization over environment model

fixes #2269 - Add gettext framework to foreman.

This patch adds a gettext based localization framework to the Foreman. This is done by adding the fast_gettext and gettext_i18n_rails gems along with their depdencies. An example translation is done to the login page and the users controller....

fixes #2264 - replace fulltext sources.value index with digest

fixes #2202 - add all unassigned actions to appropriate permissions

fixes #2253 adds openstack floating ip support

fixes #2251 - adds openstack image listing

also refactor image list fetching

fixes #2252 - add supports to openstack log console

fixes #2222 hostgroup form can be scoped by multiple taxonomys.

fixes #2242 - concatenate HTML errors, don't use Array#to_s on Ruby 1.9