v7.0-beta.67

* Issue **#1901** : Create default (index) volume group if it is used prior to UI.

* Issue **#1900** : Fix inter-node task assignment, change how processing user equality is checked.

* Change dashboard field expression editor to be a bit wider and use a monospace font.

* Issue **#1887** : Fix searches hanging generally and specifically when streams have been deleted.

* Issue **#1877** : Change conditional formatting to support decimals.

* Change conditional formatting to set the available rule operators according to the format type of the column.

* Change conditional formatting to support date terms and date comparisons.

* Issue **#1885** : Fix annotations icon not being enabled on dashboard tables.

* Issue **#1883** : Code now deals with missing streams when performing search extraction.

* Issue **#1882** : Added capacity restriction to the stream event map used in search result extraction. The previous version was causing out of memory exceptions.

* Change names of hidden special table columns on dashboards to avoid name clashes.

* Make dashboard table settings popup bigger to accommodate the conditional formatting.

* Added logic to rename conditional formatting term fields on a column rename.

* Added logic to prevent renaming a column to an existing name.

* Issue **#1872** : Partially fixed to show the 1st 1k chars of the single line raw source. Full fix will come in v7.

* Issue **#1874** : Fixed dashboard tables not showing data if the stream id column is present.

* Issue **#1868** : Stop `Stream not found with id=nnn` errors during searching.

* Issue **#1864** : Added `*` wildcard to conditional formatting matches.

* Issue **#1865** : Fixed NoSuchMethodError.

* Issue **#1854** : Changed search mechanism to poll for remote results to reduce the chances of hung searches.

* Uplift event-logging-schema content pack to v3.4.2.

* Uplift standard-pipelines content pack to v0.2.

* Uplift template-pipelines content pack to v0.3.

* Change the off-heap ref store to use xxHash for hashing its values.

* Change key widths used in ref data store. Existing stores will need to be deleted and re-generated.