Fix version selector - do not list versions newer than 0.9.0, use

"0.9 or newer" instead.

installer/rcube_install.php

@@ -456,7 +456,8 @@ class rcube_install
         '0.6-beta', '0.6',
         '0.7-beta', '0.7', '0.7.1', '0.7.2', '0.7.3', '0.7.4',
         '0.8-beta', '0.8-rc', '0.8.0', '0.8.1', '0.8.2', '0.8.3', '0.8.4', '0.8.5', '0.8.6',
-        '0.9-beta', '0.9-rc', '0.9-rc2', '0.9.0', '0.9.1', '0.9.2',
+        '0.9-beta', '0.9-rc', '0.9-rc2',
+        // Note: Do not add newer versions here
     ));
     return $select;
   }