Drupal 8 port

Ported to Drupal 8, it is development release but working fine. I will upload recommended release after testing different scenarios.

Cheers,

I did a near-full refactor of the D8 version.

Some (bigger) changes:

• Using config entity for configuration instead of wrongly using Drupal state
• Renamed configuration variables
• Refactored query
• Using dependency injection where possible
• The twig template changed slightly in variables
• Possibility to get suggestions over all content types or only the one that is being used
• Optionally display the content type in the suggestions

The logic and module behaviour stay the same.

+++ b/config/schema/suggest_similar_titles.schema.yml
@@ -0,0 +1,25 @@
+      label: 'Number of nodes'

This should be "Check node access"

Updated the patch to prevent an empty processed title array from being passed to the query-generating function. An empty title array will cause the OR group in getMatchingTitles() to be empty which will cause the errors documented in #2923690: Empty conditions groups might break the query due to empty where generated.

Attaching interdiff here.

Adding a patch that also includes support for inline entity forms. This is needed when using node creation within entity browsers.

It may make more sense to upload this as its own separate issue, but it relies on the patch in #6 to work, so I just re-rolled that patch with this work. I could re-roll the patch for a separate issue if needed.

I pushed the patch and now is better if we create new issues for the new features/bugs/tasks.

I will check this project in the next days to see if we can release the first D8 version.

Great work, thanks!