Table and TopList widgets can now display the results of multiple queries

## Feature Table and TopList widgets can now display the results of multiple queries. You can also configure the column headers, data alignment, and color-code cells based on how a numeric value compares to a threshold. For more information, see the following documents: * [Display the most recent data in tabular form](https://cloud.google.com/monitoring/charts#add%5Ftable) * [API Example: Dashboard with a TimeSeriesTable widget](https://cloud.google.com/monitoring/dashboards/api-examples#dashboard%5Fwith%5Fa%5Ftable%5Fwidget)