don't show projects that the user can't access
restrict reading issues to project members
update gems
fix title test to work with capybara 2.1
Restrict creating issues to only people with permission
Restrict issue updating to only people with permission
Restrict deleting issues to only those with permission
only show links for available actions based on current user
add permissions control panel for admins
Add creating, editing, updating, and deleting issues to permissions control panel
add seeds file and test