Moved user retrieval to API
Moved user account settings to API
Fixed displaying login errors
Moved account registering to API
Organized password reset and account activation
Moved account activation and password reset to API
Changes to privilege system
Removed trash HTML
Fixed post uploading
Added one-time save to posts/users adding/editing
Implemented new enums
Removed obsolete code
Renamed LogHelper to Logger
Encapsulated a few entity getters and setters
Added unit test system
Fixed login when mail activation is enabled
Fixed decrypting text with trailing whitespace
Moved validation to entities
Added return values for models::save
Logger path accepts simple templates