Update RestApiBodyObject.groovy

Add support for specify none-body by set name=”null”
Update JSONDocUtilsLight.groovy

Add support for specify none-body by set name=”null”
Update RestApiMethodDoc.groovy

Fix a tiny issue of RestApiMethodDoc
Update index.gsp

1. Update index.jsp to modify color for PATCH tag
2. Update index.jsp to make the consume radio check first value by default
3.  Update index.jsp to add support for multipart body
Merge pull request #43 from AiqinLai/master

Add support for multipart body and fix issues