Merge pull request #136 from davidmsantos90/master

[CDE-313][CDE-308]: widget save and widget parameters editor
[CDE-309] - Changed parameter declaration in generated dashboards. Added unit tests
Merge pull request #137 from diogofscmariano/CDE-309

[CDE-309] - Changed parameter declaration in generated dashboards. Added...
[CDE-310]: change renderApi render method to receive extra information to later be injected into Dashboards.context