[birt-dev] CheckIn: Fix[Bugzilla] 133927：Access to DataSource / DataSet

["Xiong Zhang" <xiong.zhang@xxxxxxxxxxx>]

-Summary:Access to DataSource / DataSet Properties

- Bugzilla Bug (s) Resolved:133927

- Description:
I've fixed this bug:
1. Added event handler to data source and data set;
2. General sheets of data source and data set are mistaked by Yueqian in the last update, I modified them this time.

- Tests Description: Manual

- Notes to Build Team:

- Notes to Developers:

- Notes to QA:

- Notes to Documentation:

- Files Added:

- Files Edited:

/org.eclipse.birt.report.designer.ui.ide/src/org/eclipse/birt/report/designer/internal/ui/ide/propertyeditor/IDECategoryProviderFactory.java
/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/ui/views/attributes/providers/CategoryProviderFactory.java