Fixed crash that can occur while editing or saving rule.
Fixed crash when editing a rule using attributes that are no longer supported.
Pattern editor window should no longer appear in lower left corner of screen. Happens when one drags (even slightly) instead of clicks on the pattern field.
Fixed pattern field not expanding when item is dragged in (as opposed to typed or inserted by clicking on them).
When editing a format pattern, example text now shows a date for custom date attributes.
