Define a TDMU quiz grades method
Merge branch 'md_24_tdmu_quiz_grades' into md_24_tdmu_all
Add flags images that works as links to a language selection
Merge branch 'md_24_tdmu_langs_flags_btn' into md_24_tdmu_all
Language flags files
Merge branch 'md_24_tdmu_langs_flags_btn' into md_24_tdmu_all