Revert "User's guide (README)"

This reverts commit d9849637f7ad51416255a2e38b1ca4bd61bd4bb2.
Revert "Default help page"

This reverts commit 501918d703c65851dca5087f14d1ffc707f5b465.
Revert "Default front page"

This reverts commit e6dad3d97d6c154a58005eaa2ae691b4a41c9f0b.