edited publisher/jaggery.conf to apis endpoints
added authenticate/logout for rest api
added ref_api_router.jag to route rest api calls
Added missing modules to pom.xml
added rxts,utils /jaggery-modules/pom
Merge remote-tracking branch 'upstream/1.2.0-m2' into 1.2.0-m2

update
implemented endpoints GET:/apis/assets/ and GET:/apis/assets/:id with field-expansion
moved api logic to /publisher/modules/api-asset-manager.js
Fixed a typo with the stringify method
Merge remote-tracking branch 'upstream/1.2.0-m2' into 1.2.0-m2
updated apis-asset-manager.js description
updated jaggery-module/pom.xml
refactored create/update forms