Add gon gem

The gon gem helps us pass ruby variables over to javascript, which helps us graph out the data from the database
Finish graphing from postgres [WIP]
Merge branch 'dev' of github.com:ejayt/insite-web into dev

Conflicts:
	app/controllers/branches_controller.rb
	app/views/branches/show.html.erb
Create leaf controller and correspoding views for the actions [WIP]

Code in show.html.erb doesn't work, needs to be worked on