Revert "[aphrodite] Config ActiveAdmin"

This reverts commit c4068272a564e212e5fc34d909b11172f7f48720.
Revert "[aphrodite] Install ActiveAdmin"

This reverts commit bd51b86cd021bab0999ef5a49134149e9ea27f88.
Revert "[aphrodite] Add documents resource for AA"

This reverts commit 8e487aacec13a384f6cb487d76e99496fcd83a08.
[aphrodite] Add download link #152
[aphrodite] Install rails admin