Remove trailing whitespace
Remove "Successfully created proposal" flash

This is visually disturbing, and since it looks similar
to the "Successfully applied proposal" message we had a customer
confused by it already. Just remove it.
Merge pull request #1124 from dirkmueller/no_successs

No successs
Initial support for provisioning SLE12 nodes
Correctly sort the list of available platforms

Here's how we sort it:
  - first the default platform (since it's the default)
  - then linux platforms, alphabetically sorted (and with higher
    versions first)
  - then Windows, with higher versions first
  - finally Hyper-V, with higher versions first
Merge pull request #1128 from rhafer/vuntz-sle12

Initial support for provisioning SLE12 nodes
add .sass-cache dir to gitignore

A lot of files are generated in crowbar_framework/.sass-cache when
running the tests locally. These can be ignored.
Merge pull request #1130 from mapleoin/sass-cache-ignore

add .sass-cache dir to gitignore
setup spec tests for the crowbar cookbook

add a sample succcessful test just to show that everything is running
travis: use a test matrix to run two test suites in parallel

Since the chef cookbooks and crowbar UI test suites have very different
requirements, we run these in parallel. We have to use bash scripts
because travis yml files don't support conditionals.