Use hitandrun for generalized sampling instead of homebrewing it

 - Also add a test file that runs through the thrombolytics example with different preferences. TODO: asserts about the actual values.
Merge branch 'develop' of github.com:gertvv/mcda-elicitation-web into develop
Make thrombolytics test check return values

 - The bounds are probably on the tight side but it passes most of the time
Merge branch 'develop' of github.com:joelkuiper/mcda-elicitation-web into develop
Merge pull request #39 from gertvv/develop

Let hitandrun worry about the equality constraints