[server] Unmess templates
[server] utf timestamp util
[server] truthful help in pad management commands
[server] slug generated based on timestamp instead of primary key since the latter doesn't exist yet at the moment of entry creation
[server] just shortened code line in endec
[server] Subject name and abbreviation unique
[server] timestamp import in models
[server] supervisor extracted to separate model
[server] models stuff
[server] Supervizor added to admin panel