[birt-dev] CheckIn: Fix 155751, 155766 in head 2.2 and branch 2.1.

["Xuelan Li" <xuelan.li@xxxxxxxxxxx>]

Summary:

Fix 155751, 155766 in head 2.2 and branch 2.1..
- Bugzilla Bug (s) Resolved: 155766, 155751

- Description:

 

155751: image and other resources can not be found for the resource folder is not set in the URL.

155766: preview tab can not refresh the changes in the report.

 

- Tests Description:

 Manual test
- Notes to Build Team: None

- Notes to Developers: None

- Notes to QA: None

- Notes to Documentation: None

- Files Added:

    
- Files Edited:

   

Checking in src/org/eclipse/birt/report/viewer/utilities/WebViewer.java;