ovpn: 24 hours after I develop this, Asus has a new GPL where they implemented something similar :)  Reverting so I can use their implementation instead, for simpler maintenance.

Revert "openvpn: more granular state values, providing feedback on automated key/crt generation"

This reverts commit d8c52ec9f225ba6d193bd40551da905d1535b1f9.
ufsd: this is dynamically built at compile time
ovpn/webui: Adapted to Asus's improved state report
ovpn/webui: Improve support for Asus's state report