Fix/rule filter json save

[bmfmancini]

Fixes saving alarm and removal rules created with the visual filter builder.

• Synchronizes filter JSON before Cacti serializes the form.
• Ensures displayed defaults such as Message / contains are included in serialized rules, even when dropdowns are not changed.
• Restores compatibility with local and remote Syslog databases by passing unqualified table names through the active database connection.
• Adds regression coverage for submission ordering, default condition serialization, and database table handling.