Merge pull request #35 from wso2-dev/master

merge from wso2-dev
add exception dialog for Function generation class
split operator result array map, toLower/Upper case chaining
concat tranformer extend from  manyToOne class
extend split transformer from OneToMany
extend ToLower/UpperCase from oneToOne
update datamapper model for ad split omiting indices
update data mapper edit
add property to set indices for omiti values from split result array
operator chaining with one to one
improve code readability
add copyright
refactor transformer classes
refactor editpart classes
use string builder instead of string concat
Merge pull request #37 from wso2-dev/master

Merge branch 'master' of https://github.com/wso2-dev/developer-studio
Merge pull request #38 from wso2-dev/master

Merge branch 'master' of https://github.com/wso2-dev/developer-studio
Merge pull request #65 from lsdeva/master

operator chaining, refactor transformer classes