enabled a couple of useful commands by default

modules/prelude-editor.el

@@ -158,8 +158,14 @@
 (add-hook 'message-mode-hook 'prelude-turn-on-flyspell)
 (add-hook 'text-mode-hook 'prelude-turn-on-flyspell)
 
-;; enable narrow to region
+;; enable narrowing commands
 (put 'narrow-to-region 'disabled nil)
+(put 'narrow-to-page 'disabled nil)
+(put 'narrow-to-defun 'disabled nil)
+
+;; enabled change region case commands
+(put 'upcase-region 'disabled nil)
+(put 'downcase-region 'disabled nil)
 
 (require 'expand-region)
 (global-set-key (kbd "C-@") 'er/expand-region)