Now variables are in variables.css in frontend directory. Previously they were in assets, which was wrong because it caused copy to production image.

This PR implements column layout for the replica set list view. The
layout is implemented through a directive that puts its transcluded
elements into a column layout.

There's some algorithmic code in this PR, so please comment if something
is not tested or easy to understand.

Please also verify on your machines that this works correctly.

* this is a refactoring change - no functional changes
* added missing tests
* added missing module dependency (tests found it)
* this is a prerequisite PR for future work on the card

This also fixes a few breaking changes.

This change handles replica set description end-to-end: saving in on the
deploy form and then displaying. It also handles replica set endpoints.
I also attempted to write tests for the go code, but this change grew
too much. I'll do this later.

The implementation consists of backend code and sample frontend view
that dumps the data into an ugly looking table. Subsequent changes will
implement frontend so that things look pretty.

This change connects replica set list and detail views and applies
RESTful conventions to the API.

Now API and app URLs follow RESTful API conventions. This change is also
an example of how views hould be connected. See state params and state
name exports.

The cards now display mostly fake data, but they look more complete. The
backend will be implemented soon.

Per discussion in: https://github.com/kubernetes/dashboard/issues/65

This change does only renaming, no functional modifications.

This is to show in a simple layout what the backend returns.

1. This is a model for mocks:
https://github.com/kubernetes/dashboard/blob/master/designs/11-11-2015/16_card%20variations.png
2. Did little renaming (used the word "microservice") until we agree what the list exactly shows.
3. The implementation is very basic and will evolve over time.

This change is mostly boilerplate for the two views and cleanup of test
code that has been laying around.