- Get the scroller orientation from the xib.
- Fix the nonsensical calculation of _isVertical when given bounds.
- Since orientation comes from the xib, had to re-nib2cib everything to be safe.
Tests: CPRuleEditorCibTest, CPPredicateEditorCibTest, SmartFoldersDemo: a real world usage of CPPredicateEditor.
Documentation for these 3 new classes.