Fix DataSchemaConfiguration conditions node

Add ability to modify config by extension

Fix empty rows processing

Fix property source processing

Add ability to set global condition for schema

Add ability to condition be enabled and disabled programmatically.

Add ability to set or add sortBy config option programmatically.
Add special source value "$" - means all data.
Add ability to discrimination column be valid source value.
Fix fetching missing select source.

Fix in scope check

Fix placeholder error with unauthorized user

Add ability to modify config by extension

Fix empty rows processing