Allmon3 v1.2.0

Changes and Fixes for v1.2.0

• Fix missing await in ws_voter keepalive (fix #191)
• Fix reloading user database when called in USR1 handler (fix #192)
• Only enable Apache2 modules in postinst when apache2 is installed (fix #195)
• Re-add missing python3-websockets dependency in debian/control (fix #196)
• Fix default CSS custom variables to match core code (fix #197)
• Fix and enforce correct mode and owner on password-containing files (fix #201)
• Fix allmon3-passwd from overwriting elements out of order in users (fix #204)
• Clear"Login Failure" message on next success (fix #205)
• custom.css supports customizing the Node Transmit Line (fix #208)