Enhance upgrade show during install (#2676)

the install uses upgrade_domains.php, update it to use well known
varibles to show output

core/upgrade/upgrade.php

@@ -45,7 +45,7 @@
 			echo "access denied";
 			exit;
 		}
-		$display_type = 'html';
+		$display_type = 'html'; //html, text
 	}
 
 //add multi-lingual support

core/upgrade/upgrade_domains.php

@@ -32,7 +32,7 @@
 		set_include_path($document_root);
 		require_once "resources/require.php";
 		$_SERVER["DOCUMENT_ROOT"] = $document_root;
-		$format = 'text'; //html, text
+		$display_type = 'text'; //html, text
 	}
 	else if (!$included) {
 		include "root.php";
@@ -45,13 +45,14 @@
 			echo "access denied";
 			exit;
 		}
-		$format = 'html'; //html, text
+		$display_type = 'html'; //html, text
 	}
 
 //run all app_defaults.php files
 	require_once "resources/classes/config.php";
 	require_once "resources/classes/domains.php";
 	$domain = new domains;
+	$domain->display_type = $display_type;
 	$domain->upgrade();
 
 ?>