Refactored category api
Fixed Typo
Renamed parent to parentId and added childId to get categories response
Convert child id to boolean for categories response!
renamed children index
Removed unused class that become obsolete during refactoring
Removed hasChild from response
Removed hasChild from response
Add hasChildren property to response
updated fields action
Merge branch 'refactoring/categories' of git://github.com/sulu-cmf/SuluCategoryBundle into refactoring/categories
cleanup field action
Merge pull request #24 from sulu-cmf/refactoring/categories

[REFACTORING] Refactored category api