Merge pull request #10 from Gayany/master

Fixing create datamapper configuration dialog and import input/output schema
Adding Concat operation
Merge branch 'master' of https://github.com/wso2-dev/developer-studio

Conflicts:
	data-mapper/org.wso2.developerstudio.visualdatamapper.diagram/src/dataMapper/diagram/edit/parts/InputEditPart.java
	data-mapper/org.wso2.developerstudio.visualdatamapper.diagram/src/dataMapper/diagram/edit/parts/OutputEditPart.java
Adding Equal and Concat operator's code gen logic.
Datamapper diagram open flow completed
Merge branch 'master' of https://github.com/wso2-dev/developer-studio
Merge pull request #11 from wso2-dev/master

Merge pull request #7