CORE-4685 Refactored AppWizardFieldFactory Int/Double Validators.

Updated AppWizardFieldFactory to use the Int/Double Above/BelowValidators instead of GXT's Min/MaxNumberValidators.
These Validators will validate their given values exclusive of their limits. For example, IntAboveValidator will validate that the given value is greater than its limit, instead of greater than or equal to its limit, which is the default behavior of GXT's MinNumberValidator.
I18N#RULES in ui-resources was renamed to VALIDATION.