See `discipline/666/teachers` page.

Link with name "Back to rating". The bug was caused by editing some routes.

Ternary operator is left-associated in PHP (right in C++), so we have:
    (...) ? one : second;

I have put an extra braces to improve the evaluation order.

Look at office/ page

Appears only when teacher doesn't have any disciplines.

Conflicts:
	db/Makefile

it-lab/grade#29 (comment 111)

Conflicts:
	db/stored/procedures.sql
	db/stored/views.sql
	db/structure/base.sql
	~dev_rating/application/classes/Model/Discipline.php
	~dev_rating/application/routes/dean_office.php

Login pass fixes



See merge request !3