fixes #2498 FactNames are not precreated

Witlessbird's fix to reduce database lookups and do Ruby hash lookups instead
RPM packaging fixes

* fix therubyracer require name
* when Foreman launched twice within same PID, ENV['BUNDLE_GEMFILE'] is already
  set, causing bundler to load instead of bundler_ext
* revert SCL additions to init.d script, spec file handles them
* fix init script path
* export HOME in init script as Puppet requires it
* add gettext_i18n_rails_js dependency, minor dependency fixes to compile
  assets and match RPM versions
* create settings.yaml to precompile assets
* specify required attributes for local_secret_token.rb
* comps updates
Fixes #2502 - session expiration updates

Signo now allows to transparently prolong user session which got
expired. Also when you now logout from Foreman you will end up in Signo
login form. This brings some code clean up and test changes and small
SSO method API change.