Adding event hook for existing users: #825

It would be ideal to have event hooks to cater for existing users, that we can add additional functionality too.

Index: core/Tracker/Visit.php
===================================================================
--- core/Tracker/Visit.php  (revision 2)
+++ core/Tracker/Visit.php  (working copy)
@@ -148,6 +148,9 @@
                                    $idActionReferer, 
                                    $this->visitorInfo['time_spent_ref_action']
                            );
+
+               Piwik_PostEvent('Tracker.existingVisitorInformation', $this->visitorInfo);
+
            } catch(Piwik_Tracker_Visit_VisitorNotFoundInDatabase $e) {
                printDebug($e->getMessage());
                $this->visitorKnown = false;

Defer to #813 review.

Sorry, wrong ticket. Deferred to #613 review.

see: Tracker.knownVisitorInformation

(In [1344]) fixes #825 - add event hook for known users, Tracker.knownVisitorInformation

updated wiki:Plugins/Hooks