Added Behat tests

.travis.yml

CHANGES.md

...hat/theme_boost_campus_additional_layout_settings.feature

tests/behat/theme_boost_campus_advanced_settings.feature

...s/behat/theme_boost_campus_course_layout_settings.feature

tests/behat/theme_boost_campus_design_settings.feature

...s/behat/theme_boost_campus_footer_layout_settings.feature

tests/behat/theme_boost_campus_general_settings.feature

tests/fixtures/favicon.ico

tests/fixtures/login_bg.jpg

tests/fixtures/moodle_logo.jpg