Have unique events id for widgets

[Iván Loire]

So you can, if you wanted, repeat the same widget with the same job and config in a particular dashboard (now you run in trouble if you try)

[Iván Loire]

https://bitbucket.org/atlassian/atlasboard/pull-request/37/unique-events-for-widgets-even-if-they/

Will be released in 0.11.0