Track seconds instead of days for "days since" dimensions (#15774)

* Modify dimensions and add tests.

* unfinished debugging commit

* changes to fix test, remove tracker code, add update code

* fix some tests

* fix migration issue

* fixing some tests

* fix some bugs, update some expected test files, remove _idvc from some tests

* start replacing _ects

* Finish seconds since last ecommerce order change.

* fix couple issues

* fix a couple tests

* fix some more tests

* fixing a couple more tests

* apply review feedback

* unfinished commit

* add back dimensions =

* fixing tests & removing some code

* fix some bugs + tests and remove debugging code

* fixing some tests and issues

* Some debugging code for the tracker in case of exceptions.

* debug and fix another issue when tracking visits in the past

* fix test

* update JS and fix several tests

* Fixing more tests.

* Add missing files.

* update expected test files

* Add some unit tests.

* update more expected files

* update more test files

* update more test files

* update changelog and remove _ects query param

* apply review feedback

* fix merge issue

* clearer code

* fix migration issue

* update expected files

* update expected files again

* updating tests

* fix test

* rebuilt piwik.js

* unify previous visitor properties / original visit row approach

* fixing some tests

* Add new column version entries into the option table.

* try undoing 1.5 update change

* apply review feedback

* remove more unused cookie values

* rebuilt piwik.js

* Fix test count.

* update test files

* rebuilt piwik.js

* removel log analytics submodule update

* update submodule

* update some expected screenshots

* Fix versions in omnifixture since we were probably adding to the beta update after it changed.

* update screenshots

1 files changed, 14 insertions, 2 deletions

diff --git a/plugins/CoreHome/VisitorDetails.php b/plugins/CoreHome/VisitorDetails.php
index ad6a531d43..2c32a9a1cd 100644
--- a/plugins/CoreHome/VisitorDetails.php
+++ b/plugins/CoreHome/VisitorDetails.php
@@ -25,7 +25,9 @@ class VisitorDetails extends VisitorDetailsAbstract
         $visitor['visitEcommerceStatus']        = $this->getVisitEcommerceStatus();
         $visitor['visitEcommerceStatusIcon']    = $this->getVisitEcommerceStatusIcon();
         $visitor['daysSinceFirstVisit']         = $this->getDaysSinceFirstVisit();
+        $visitor['secondsSinceFirstVisit']      = $this->getSecondsSinceFirstVisit();
         $visitor['daysSinceLastEcommerceOrder'] = $this->getDaysSinceLastEcommerceOrder();
+        $visitor['secondsSinceLastEcommerceOrder'] = $this->getSecondsSinceLastEcommerceOrder();
         $visitor['visitDuration']               = $this->getVisitLength();
         $visitor['visitDurationPretty']         = $this->getVisitLengthPretty();
     }
@@ -62,12 +64,22 @@ class VisitorDetails extends VisitorDetailsAbstract
 
     protected function getDaysSinceFirstVisit()
     {
-        return $this->details['visitor_days_since_first'];
+        return floor($this->details['visitor_seconds_since_first'] / 86400);
+    }
+
+    protected function getSecondsSinceFirstVisit()
+    {
+        return $this->details['visitor_seconds_since_first'];
     }
 
     protected function getDaysSinceLastEcommerceOrder()
     {
-        return $this->details['visitor_days_since_order'];
+        return floor($this->details['visitor_seconds_since_order'] / 86400);
+    }
+
+    protected function getSecondsSinceLastEcommerceOrder()
+    {
+        return $this->details['visitor_seconds_since_order'];
     }
 
     protected function getVisitorReturning()