#843 Issue with % when doc reference is applied for map_key_path

[Ravindra]

Issue with % when doc reference is applied for map_key_path attributes

Steps to reproduce the issue:

1. Load Manipulate XML example
2. Go to reposition elements folder
3. Open getpolicy.xbd and modify the xa: map_key_path by selecting set xml path option
4. In path tool select any element and select “Document” radio button

Observer that following value is displayed in path text box in path tool:
%xa-doc::/LifePolicies/globalElement%

In the above path % is surrounded which is incorrect. The correct path is
xa-doc::/LifePolicies/globalElement

Note: In the above example, it is generating valid for all map attributes except for map_key_path