sarah_branch

I'm not sure if I did this right because this is my first time sending a pull request, so I apologize in advance if things are incorrect. I basically changed the disease main page and the specific diseases page. The following files are the ones that should be different (I think I merged my upstream with my HEAD, which somehow changed things that should not have changed eek):

lib/monarch/web/webapp.js (added navlistdisease to core renderer)

templates/disease.mustache
templates/disease_main.mustache
templates/main.mustache
templates/navbar.mustache
templates/navlist.mustache
templates/navlistdisease.mustache (special navigation list for disease pages)
templates/rightlist.mustache (part of navigation list for recent searches)

css/disease.css (CSS files for specific diseases pages)
css/disease_main.css (CSS files for main disease page)
css/script.js (used for panels/tabs in specific diseases pages)