Support of boolean field values

[sigma-z]

• Query should fetch field values that are defined as boolean as php boolean
• Saving boolean field values a record should only accept boolean values and NULL (strict mode for boolean field values, if strict mode off accept int and string as well)

[stevennikolic]

how/where to enable/disable the strict mode?

[sigma-z]

Configuration of strict mode (boolean field fetch behavior) should be handled in the RecordManager for ALL record classes.

I'm open for other suggestions.