Implemented proper logging, with support for file logging, timestamp and syslog (this last one is untested)

Fail2Ban Setup & Walkthrough

fix bad path in Alpine Dockerfile

Update dockerfile for alpine, armv7 and aarch64

# Conflicts:
#	Cargo.lock

# Conflicts:
#	Cargo.toml

# Conflicts:
#	src/api/core/mod.rs

# Conflicts:
#	Cargo.lock
#	Cargo.toml
#	src/api/core/mod.rs

Update backup section of README.md

Fixes NFC Response for Mobile Yubikey OTP Login

Adds Yubikey OTP Support

Prevent accepted user from seeing ciphers until confirmed (fixes #196)