[CDE-406]: Drag and drop / reorder doesn't work for teh freeform layout
[CDE-406]: refactor addRowOperations and some minor adjustments to drag and drop
[CDE-406]: unit tests for drag and drop
Merge pull request #206 from davidmsantos90/master

[CDE-406]: Drag and drop / reorder doesn't work for teh freeform layout
[CDE-406]: fixed javascript unit tests
Merge pull request #207 from davidmsantos90/master

[CDE-406]: fixed javascript unit tests