Multi-client observable work started.
Add require_once for the NotifyServer class.
Single field updating is succeeded.
Multi-Client updating for calculation fields.

INTER-Mediator-Calc.js is the new source file.
Multi-client delete synchronization works, and One JS file added.
Test Cases for the multi client sync.
Schema files are adapted.
PostgreSQL schema changed, grant tables for sync
PostgreSQL sequence specified.
Any field names weren't valid.
SQLite special handling
SQLite in PHP 5.2 handled. It can't delete cascade.
Improve unregister process
Definition File Editor modified.
Insert and Delete are working but not perfect.
Synchronization mostly works fine!
Merge branch 'master' into observable-in-multi-clients
Merge branch 'observable-in-multi-clients'