Revert "reverted post_deploy"

This reverts commit 5db782914553a739d2b8aed8dd59ff4d2d5ad85e.
Revert "removed post_deploy, changed README"

This reverts commit e0b31042d7aead62e9c71da9275cefce9f01545a.
Revert "added linking to static folders in post_deploy"

This reverts commit 1b264347a6b325c330562f9329c4abdfc36426d6.
Revert "added export lang to pre_start"

This reverts commit 823da241e827094ce42ba5ff3535ef6602e96242.
Revert "added export lang to deploy hook"

This reverts commit 3ec73a63b7c7d88e27d9750ec9bd55c0e210fdff.