Add some constants in model.

Signed-off-by: Pengcheng Bian <pbian@actuate.com>
Bugzilla#456364 Support default format for datetime level:
weekOfMonth,weekOfYear,dayOfWeek,dayOfMonth,dayOfYear, so that chart can
display correct formats.
Fix clean issue in CDateTime
Bugzilla#456382 Fix the chart interactivity issue on mac
Support dynamic number of namespaces.

Signed-off-by: Pengcheng Bian <pbian@actuate.com>
Merge pull request #59 from TerryPCBian/master

Code Enhanchement
Code Refactor

Signed-off-by: Pengcheng Bian <pbian@actuate.com>
Code Enhancement: Theme related support.

Signed-off-by: Pengcheng Bian <pbian@actuate.com>
Chart Enhancement.

Signed-off-by: Pengcheng Bian <pbian@actuate.com>
Code Refactor: Themes.

Signed-off-by: Pengcheng Bian <pbian@actuate.com>
Merge pull request #61 from TerryPCBian/master

Code Refactor and enhancement