Fix bug in the menu and a small change to org-beamer.

* org.el: Prevent a bug while defining the menu by requiring
`org-beamer' when necessary.

* org-beamer.el (org-insert-beamer-options-template): Make the
parameter optional since the interactive call defines it.

lisp/org-beamer.el

@@ -579,7 +579,7 @@ include square brackets."
 (add-hook 'org-export-preprocess-before-selecting-backend-code-hook
 	  'org-beamer-select-beamer-code)
 
-(defun org-insert-beamer-options-template (kind)
+(defun org-insert-beamer-options-template (&optional kind)
   "Insert a settings template, to make sure users do this right."
   (interactive (progn
 		 (message "Current [s]ubtree or [g]lobal?")

lisp/org.el

@@ -19082,7 +19082,8 @@ See the individual commands for more information."
       (org-inside-LaTeX-fragment-p)]
      ["Insert citation" org-reftex-citation t]
      "--"
-     ["Template for BEAMER" org-insert-beamer-options-template t])
+     ["Template for BEAMER" (progn (require 'org-beamer)
+				   (org-insert-beamer-options-template) t])
     "--"
     ("MobileOrg"
      ["Push Files and Views" org-mobile-push t]