Fix navigation WithStudentPathNavigation tests
Fix navigation WithStudentPathNavigation tests

Since FA5's icons have no padding and text is, by default, too close to them,
the FA5 Rails gem automatically adds a span for the text with the fa5-text
class (or fa5-text-r for right-hand side icons) which has 5px of left and
right padding, respectively.

mumuki/mumuki-laboratory,mumuki/mumuki-laboratory,mumuki/mumuki-laboratory,mumuki/mumuki-laboratory