[CDF-398] - CCC - make existing cartesian axes option "TickFormatter" also apply to discrete axes
* CDE properties
Merge pull request #176 from dcleao/CDF-398

[CDF-398] - CCC - make existing cartesian axes option "TickFormatter" also apply to discrete axes
[CDF-404] -  CCC - Modified discrete cartesian axis band model, with different semantics and the addition of maximum size and spacing options
* CDE properties
Merge pull request #177 from dcleao/CDF-404

[CDF-404] -  CCC - Modified discrete cartesian axis band model, with different semantics and the addition of maximum size and spacing options