improving several issues (more details in the description)

* right panel is closed when the last task is completed
* if the task is the latest of process and this process would be finished with this task, the right panel is closed
Form editor:
* The "Claim Button"  is showed and its functionality is solved
* The "Release Button" its functionality is solved
* In the task list was solved a scenario that was incompatible when in the Datagrid we had one task of process and one simple task

* http://pastebin.com/NnMtEy1E this link has a simple proccess bpmn2 for all the tests

Scenarios:
* grid
* day
* week
* month