Revert "file extension"

This reverts commit ec0d1dabe258905df5072f4d3f13792108db699a.
Revert "added index page"

This reverts commit 3f95dc88d56666e68fea71dbff81e54b935019c1.
Revert "Revert "index page""

This reverts commit d7c6256065a3289b5090727bd441a2ca29b1b0ac.
Revert "index page"

This reverts commit 89d5f81ce39167d6594e436c2a18595c9dab964e.