add tab menu to filter courses user follow as student from courses where user is admin
Merge branch 'master' into my-courses-tabs
Merge branch 'master' into 3846-my-courses-tabs
My Courses: populated Courses I assist tab
i18n
Tests of UserCoursesView.courses_user_has_role
Template of courses_user_has_role, new tab added: Courses I coordinate
Implementation of UserCoursesView.courses_user_has_role (tests ok)
i18n
Fixed templates
Refactoring
Merge branch '3846-my-courses-tabs'