unit tests enabled encryption
unit tests for db class: covered _fix_table_name()
auth user: cleanup and now trimming inpput login and password to avoid strange bug reports
auth admin: cleanup and now trimming inpput login and password to avoid strange bug reports
db: removed support for standalone mode, use custom version if you need yf_db without main()
db: sys_prefix tables added script to fill them
db: sys_tables: added auto-generated file
db: now tables with sys prefix loaded from auto-generated file