fix href of "Browser and device support"

BS3 commits: 671fb7020bdaa807da6be2e23b779c65cb52a4d6
Fix handling of .btn-group placed inside .input-group-btn

BS3 commits: 91fdd891000b1110c7585aab1156a3edea718567
Remove soem uneeded  input-group duplication
Remove some uneeded list-group duplication