added passing solution model specs
Merge branch 'master' of https://github.com/cicadas-2014/percolator into solution_model_spec
added problem association test
Merge branch 'master' of https://github.com/cicadas-2014/percolator into solution_model_spec
added tests for form visibility
Merge pull request #42 from mcclungt/feature_specs

added specs for form visibility