Revert "update blogname cn to en"

This reverts commit b70da1f4ffd7575a256c6b9e548ca7f6fbdd81ae.
Revert "return the config url setting"

This reverts commit 303ec36ea87480669ca0d0b98262db3a235db7dc.
Revert "update config.yml setting"

This reverts commit 0f5cebbcfc5098c1f8fddbb8bb21c77e5fe73756.
revert theone theme