fixes #2254 - Add STI to hosts table

Signed-off-by: Joseph Mitchell Magen <jmagen@redhat.com>
Signed-off-by: Ohad Levy <ohadlevy@gmail.com>
refs #2254 - minor fixes related to host form
refs #2254 - minor fixes related to facts import
fixed test connection for existing compute-resource.
added blank option in ovirt select template.
Do not block create and destroy volume if api version is 3.1 or later.
fixes #2224 Selecting a RHEV 3.1 template does not work properly
fixes #2163 New host installation fails with RHEV 3.1
fixes #2242 - concatenate HTML errors, don't use Array#to_s on Ruby 1.9
Merge remote-tracking branch 'foreman/develop' by rel-eng/build.sh
Automatic rebase to latest nightly Foreman
Automatic commit of package [foreman] minor release [1.1stable-4.54234fb].