VistA based authentication has been removed. Simple username password based authentication has been added. Tasks: - [x] Specify Usernames/password/permissions via STDIN - [x] Specify Usernames/password/permissions via environment variable `ydbgui_users` - [x] Login - [x] Provide tokens - [x] Remove Basic Authentication old username/password implementation - [x] Determine authorization (RO/RW) at runtime - [x] Enable token timeout code - [x] Token clean-up by time - [x] Enable token clean-up by time code - [x] Timeout enforcement - [x] Logout - [x] Disable Timeout and Logout until we generate random tokens - [x] MR - [x] Share token data between parent and child processes - [x] Dynamically generate tokens at runtime (currently static) - [x] Enable Timeout and Logout - [x] Decide what to do about multiple servers running if we have a single database. - [x] Documentation - [x] MR - [ ] File-based usernames/passwords with password encryption: implementation to be decided - [ ] PAM authentication (RO- cannot do RW as we don't have that information right now) - [ ] Documentation - [ ] MR