Added general mainmenu directive for all pages with link Beta Test Feedback form and Github
Merge pull request #738 from apartensky/pre-dev

Added general mainmenu directive for all pages with link Beta Test Feedb...
Merge remote-tracking branch 'dfci-mev/pre-dev' into 140505-fix-issues

Conflicts:
	web/src/main/javascript/edu/dfci/cccb/mev/web/javascript/app.js
	web/src/main/views/edu/dfci/cccb/mev/web/views/elements/heatmapNavigation.ftl