"Interaction position" and corresponding segments (#10911)
* adding new interaction segments
* add possibility to limit queries
* fix Piwik does not join correctly if 2 custom joins require each other
* added position to api output
* Contents plugin: Rename "Interaction" metric to "Content Interaction"
mandatory created a new column content_name for now (instead of existing idaction_name, will maybe remove it again). Otherwise it is hard to know whether it was a content action or not and the actual problem was that maybe other actions already define an idaction_name which might be different to content_name. We need the content_name along other actions to match an interaction with an impression. Next: The client side and the redirect...