Move search page to directory.
Move search methods from students to directory.
Remove home helper. Update directory helper. Add students helper.
Change partial url in directory index. Update route for search form. Move directory edit form to students.
Include directory_helper in students contoller. Update Directory url in navigation. Remove user field from student edit form. Update route for search form.
Merge branch 'directory' of https://github.com/periwinklepath/mksdir

Conflicts:
	app/controllers/directory_controller.rb