added before action to app controller for redirect to signin path
added dropdown to new layout for marketing
successfull signin redirects to projects index page
successfull signup redirects to new project page
user membership is created when new project is created
creating a project redirects to its tasks page
users can only see projects they're members of
users cannot see tasks from projects they don't belong too
only members can see memberships
only owners can edit members
only owners can edit projects
fixed a bunch of bootstrap stuf