Fixes for issue #777

- Data updates for widgets on dashboards are now reduced in number of data to resoultion of graph
Fixes for issue #777

- Data for histogram now now reduced based on resolution of graph
Fixes for issue #777

- Dynamically added width to link from dashboard replaying query
Fixes for issue #777

- Resolution of histogram now depends on time range of search, making it more reasonable
Merge branch 'issue777'