Bug 1734182: Move privacy to site_content_version table

On site update, delete Privacy Statement from the 'site_content'
table and add it to the 'site_content_version' table.

behatnotneeded

Change-Id: Idd765bad0e72165c940e5f6090d3c8861ae8fcd5

htdocs/lib/db/upgrade.php

@@ -5609,5 +5609,24 @@ function xmldb_core_upgrade($oldversion=0) {
         create_table($table);
     }
 
+    if ($oldversion < 2018010700) {
+        log_debug('Move the site Privacy statement from the site_content table to the site_content_version table');
+
+        if ($records = get_records_array('site_content', 'name', 'privacy')) {
+            foreach ($records as $data) {
+                $record = new stdClass;
+                $record->type = 'privacy';
+                $record->content = $data->content;
+                $record->author = $data->mauthor;
+                $record->institution = $data->institution;
+                $record->version = '1.0';
+                $record->ctime = db_format_timestamp(time());
+
+                insert_record('site_content_version', $record);
+                delete_records('site_content', 'id', $data->id);
+            }
+        }
+    }
+
     return $status;
 }

htdocs/lib/version.php

@@ -16,7 +16,7 @@ $config = new stdClass();
 // See https://wiki.mahara.org/wiki/Developer_Area/Version_Numbering_Policy
 // For upgrades on stable branches, increment the version by one.  On master, use the date.
 
-$config->version = 2018010600;
+$config->version = 2018010700;
 $config->series = '18.04';
 $config->release = '18.04dev';
 $config->minupgradefrom = 2015030409;