Cron split into Cronish and OpportunisticQM

/main/cron changed to /main/runqueue

The key-required functionality is not throughly tested yet.

plugins/Cronish/CronishPlugin.php

@@ -0,0 +1,42 @@
+<?php
+
+class CronishPlugin extends Plugin {
+    public function onCronHourly()
+    {
+        common_debug('CRON: Running hourly cron job!');
+    }
+
+    public function onCronDaily()
+    {
+        common_debug('CRON: Running daily cron job!');
+    }
+
+    public function onCronWeekly()
+    {
+        common_debug('CRON: Running weekly cron job!');
+    }
+
+    /**
+     * When the page has finished rendering, let's do some cron jobs
+     * if we have the time.
+     */
+    public function onEndActionExecute($status, Action $action)
+    {
+        $cron = new Cronish(); 
+        $cron->callTimedEvents();
+
+        return true;
+    }
+
+    public function onPluginVersion(&$versions)
+    {
+        $versions[] = array('name' => 'Cronish',
+                            'version' => GNUSOCIAL_VERSION,
+                            'author' => 'Mikael Nordfeldth',
+                            'homepage' => 'http://www.gnu.org/software/social/',
+                            'description' =>
+                            // TRANS: Plugin description.
+                            _m('Cronish plugin that executes events on a near-hour/day/week basis.'));
+        return true;
+    }
+}