add urls for projects

URLs.Projects.Index => index page for projects
URLs.Projects.New => new project page
URLs.Projects.View(pid) => view page for given project
URLs.Projects.Edit(pid) => edit page for given project
Merge branch 'master'
add top level urls to URLs

URLs.Login => user login page
URLs.Register => user register page
URLs.Logout => user logout page
add urls for bugs

URLs.Bugs.New(projectID) => new bug page for given project
URLs.Bugs.Edit(bugID) => edit page for given bug
URLs.Bugs.View(bugID) => view page for given bug
Add urls for users