Structure and description improvements

...enedx/themes/indigo/lms/templates/courseware/courses.html

...go/lms/templates/dashboard/_dashboard_course_listing.html

env/build/openedx/themes/indigo/lms/templates/footer.html

...ild/openedx/themes/indigo/lms/templates/header/brand.html

env/build/openedx/themes/indigo/lms/templates/index.html

...ld/openedx/themes/indigo/lms/templates/index_overlay.html

...x/themes/indigo/lms/templates/static_templates/about.html

...themes/indigo/lms/templates/static_templates/contact.html

...edx/themes/indigo/lms/templates/static_templates/map.html

...hemes/indigo/lms/templates/static_templates/overview.html

...edx/themes/indigo/lms/templates/static_templates/tos.html

...igo/lms/templates/student_account/login_and_register.html

...openedx/themes/indigo/lms/templates/templates/course.html

env/build/openedx/themes/indigo/scripts/bmv_tags.html

env/build/openedx/themes/indigo/scripts/bmv_tags.py

env/build/openedx/themes/indigo/snippets/bmv-tags.html

themes/indigo/theme/lms/templates/courseware/courses.html

...me/lms/templates/dashboard/_dashboard_course_listing.html

themes/indigo/theme/lms/templates/footer.html

themes/indigo/theme/lms/templates/header/brand.html