[birt-dev] CheckIn: Add resource path to SessionHandle

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

-Summary: Add resource path to SessionHandle

- Bugzilla Bug (s) Resolved:
N/A

- Description:
Do 2 things:
1.When UI plugin starts, set resource path to SessionHandle;
2.When resource path changes, change the SessionHandle's resouce path too.

- 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/src/org/eclipse/birt/report/designer/ui/ReportPlugin.java
/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/ui/preferences/ResourcePreferencePage.java