[DO NOT MERGE] fix building on F18

addressing several problems.
compass compile is disabled because of
https://github.com/rails/sass-rails/issues/121

apipie is disabled because it tries to connect somewhere and fails to connect

while it succeed on F18
 http://koji.katello.org/koji/taskinfo?taskID=20062

it fails everywhere else:
http://koji.katello.org/koji/taskinfo?taskID=20063
with:
```
+ rake apipie:static --trace
rake aborted!
undefined method `version' for nil:NilClass
/builddir/build/BUILD/katello-git-35.3ced18b/bundler.d/assets.rb:6:in `evaluate'
/usr/lib/ruby/gems/1.8/gems/bundler-1.0.15/lib/bundler/dsl.rb:122:in `group'
/builddir/build/BUILD/katello-git-35.3ced18b/bundler.d/assets.rb:2:in `evaluate'
/builddir/build/BUILD/katello-git-35.3ced18b/Gemfile.in:65:in `each'
/builddir/build/BUILD/katello-git-35.3ced18b/Gemfile.in:65:in `evaluate'
/usr/lib/ruby/gems/1.8/gems/bundler_ext-0.3.0/lib/bundler_ext/bundler_ext.rb:14:in `parse_from_gemfile'
/usr/lib/ruby/gems/1.8/gems/bundler_ext-0.3.0/lib/bundler_ext/bundler_ext.rb:35:in `system_require'
/builddir/build/BUILD/katello-git-35.3ced18b/config/application.rb:23
/usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:36:in `gem_original_require'
/usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:36:in `require'
/builddir/build/BUILD/katello-git-35.3ced18b/Rakefile:4
/usr/lib/ruby/gems/1.8/gems/rake-0.9.2.2/lib/rake/rake_module.rb:25:in `load'
/usr/lib/ruby/gems/1.8/gems/rake-0.9.2.2/lib/rake/rake_module.rb:25:in `load_rakefile'
/usr/lib/ruby/gems/1.8/gems/rake-0.9.2.2/lib/rake/application.rb:501:in `raw_load_rakefile'
/usr/lib/ruby/gems/1.8/gems/rake-0.9.2.2/lib/rake/application.rb:82:in `load_rakefile'
/usr/lib/ruby/gems/1.8/gems/rake-0.9.2.2/lib/rake/application.rb:133:in `standard_exception_handling'
/usr/lib/ruby/gems/1.8/gems/rake-0.9.2.2/lib/rake/application.rb:81:in `load_rakefile'
/usr/lib/ruby/gems/1.8/gems/rake-0.9.2.2/lib/rake/application.rb:65:in `run'
/usr/lib/ruby/gems/1.8/gems/rake-0.9.2.2/lib/rake/application.rb:133:in `standard_exception_handling'
/usr/lib/ruby/gems/1.8/gems/rake-0.9.2.2/lib/rake/application.rb:63:in `run'
/usr/lib/ruby/gems/1.8/gems/rake-0.9.2.2/bin/rake:33
/usr/bin/rake:19:in `load'
/usr/bin/rake:19
RPM build errors:
```
@iNecas can you investigate this one error please?
General comments are welcomed as well.