v6.1-beta.4

* Issue **#1253** : Data retention policies containing just `AND` will now match everything.

* Issue **#1252** : Stream type suggestions no longer list internal types.

* Issue **#1218** : All stepping panes will now show line numbers automatically if there are indicators (errors, warnings etc) that need to be displayed.

* Issue **#1254** : Added option to allow non Java escaped find and replacement text to be used in `FindReplaceFilter`.

* Issue **#1250** : Fixed logging description for reading and writing documents.

* Issue **#1251** : Copy permissions from a parent now shows changes prior to the user clicking ok.

* Issue **#758** : You no longer need the `Manage Processors` privilege to call `stroom:meta('Pipeline')` in XSLT.

* Issue **#1256** : Fix error caused when logging data source name when downloading search results.

* Issue **#399** : Fix for error message when stepping that said user needed `read` permission on parent pipeline and not just `use`.

* Issue **#1242** : Fix for pipeline corruption caused when moving elements back to inherited parents.

* Issue **#1244** : Updated Dropwizard to version 1.3.14 to fix session based memory leak.

* Issue **#1246** : Removed elastic search document type, menu items and filter.

* Issue **#1247** : Added XSLT functions (`source`, `sourceId`, `partNo`, `recordNo`, `lineFrom`, `colFrom`, `lineTo`, `colTo`) to determine the current source location so it can be embedded in a cooked event. Events containing raw source location info can be made into links in dashboard tables or the text pane so that a user can see raw source data or jump directly to stepping that raw record.