E-mail sending

Change Adminer class to adminer_ functions.inc.php
Unify includes
Unify adminer_credentials()
Don't use JUSH in Editor
Separate identifier and description in breadcrumb
Simplify where()

git-svn-id: https://adminer.svn.sourceforge.net/svnroot/adminer/trunk@800 7c3ca157-0c34-0410-bff1-cbf682f78f5c

editor/db.inc.php

@@ -1,2 +1,2 @@
 <?php
-page_header(lang('Database') . ": " . htmlspecialchars($_GET["db"]), $error, false);
+page_header(lang('Database'), "", null);