* Handle failed login attempts via Telnet
* New lockout features for >= N failed attempts
* New auto-unlock over email feature
* New auto-unlock after N minutes feature
* Code cleanup in users
* Add user_property.js - start using consts for user properties. Clean up over time.
* Update email docs
* reject/retain paths for FTN networks
* Fix bug in FileEntry.findFiles() with meta pairs
* New well known file meta - mostly related to TIC
* Index of file_sha256
* FileEntry.persist() can update entries