bug#52328 - cleaning up the dtd files and idl rules;r=ducarroz;sr=sspitzer

mailnews/compose/public/nsIMsgCompose.idl

@@ -126,7 +126,7 @@ interface nsIMsgCompose : nsISupports {
   void CloseWindow();
 
   /* ... */
-  void Abort();
+  void abort();
     
   /*
     AttachmentPrettyName will return only the leafName if the it's a file URL.

mailnews/compose/resources/content/MsgComposeCommands.js

@@ -1429,7 +1429,7 @@ function ComposeCanClose()
         var promptMsg = gComposeMsgsBundle.getString("quitComposeWindowMessage");
         if (promptService.confirm(window, promptTitle, promptMsg))
           {
-            msgCompose.Abort();
+            msgCompose.abort();
             return true;
           }
         else 

mailnews/compose/resources/locale/en-US/composeMsgs.properties

@@ -207,4 +207,4 @@ CheckMsg=Do not show me this dialog box again.
 
 ## Strings used by prompt when Quitting while in progress
 quitComposeWindowTitle=Close Mail Window
-quitComposeWindowMessage="There is mail being sent, do you want to quit now or cancel and quit after the mail is sent?"
+quitComposeWindowMessage=There is mail being sent, do you want to quit now or cancel and quit after the mail is sent?