Some validation rules need changes

[michaelelfial]

After auditing the rules, some have been fixed. However some more remain in need of fixing according to the requirements. The issues are:

• The requirement to check only what you understand and return correct otherwise is overlooked or not applied correctly. The checks if the value is in the rule's domain of responsibility are lax or even incorrect sometimes. E.g. Numeric rules should perform validation only on numbers - if the value is not a number, nothing should be done.
• Date rules need review and update to use the current standard formatters. They should support smarter than now approach to parsing their parameters, letting the developer to specify the dates (max/min for example) in some universal format. More properties can be added to effect configuration of the formats expected and the other aspects of the rules behavior.