Add NotifyParents custom service

New utility: Custom/NotifyParents.php added
Clean Notify Parents

- test email set via the interface
- update translations
Remove include Grades\config.inc.php
HonorRoll*, Letters & Transcripts table fix

- Fix extra_header_left table containing the substitutions
CreateParents & NotifyParents templates

- add email templates to database
- test email set via the interface
- update translations
Disable student lists SQL echo
Remove DatabaseANSI config value
Remove DatabaseType config value

- remove DatabaseType (oracle and mysql cases)
Delete config.inc.php