Finished Projects CRUD and fixed User form

-Added Projects index as the root in routes
-Cleaned up sessions helper so less database queries are made
-Fixed Projects create not adding current_user id
-Added and filled out all of the html CRUD elements for Projects
Generated ProjectMembers controller and filled in

-Generated ProjectMembers controller
-Completed basic CRUD elements on ProjectMembers
-Heavily nested routes were set up for ProjectMembers
-Routes are as follows
	/projects/:id/members/new
		= gets a list of all people who are not members
			and gives you the ability to add them
	/projects/:id/members
		= index of members for that project
	/projects/:project_id/user/:id/membership
		= POST creates based on url params
		= DELETE destroys based on url params