v7.0-beta.77

* Issue **#1867** : Cluster entity events are now sent to each node asynchronously to prevent delays caused by one or more slow/bad nodes.

* Issue **#1923** : Fixed an issue affecting sorting dashboard table values that have mixed data types. In addition you can now sort columns alphanumerically if the column format is set to text.

* Issue **#1811** : Fixed issue where deleting or cutting/pasting text in a dashboard query editor was not marking the dashboard as dirty.

* Search results are now stored off-heap to reduce the chance of out of memory errors.

* Issue **#1911** : Add a dorop down menu for picking index fields in the expression editor.

* Issue **#1990** : Change order of items in quick filter popup help.

* Change quick filter word boundary matching to handle a mix of delimited and canelCase, e.g. `stroom.prop.maxFileSize`.

* Issue **#1986** : Fix missing gutter warning/error icons in the stepper code editor.