remove index.html from administrator/components/com_[n-z]
remove index.html from all folders starting with l
remove index.html from all folders starting with m-z
Merge pull request #5379 from okonomiyaki3000/kill-indexes-admin-components2

remove index.html from administrator/components/com_[n-z]
Merge pull request #5382 from okonomiyaki3000/kill-indexes-m-z

remove index.html from all folders starting with m-z
Merge pull request #5381 from okonomiyaki3000/kill-indexes-l

remove index.html from all folders starting with l