Prevent security dialogs being untitled. Bug 99845. r=timeless. rs=brendan with his magic string-only-changes rubberstamp.

netwerk/resources/locale/en-US/security.properties

@@ -22,7 +22,7 @@
 # Note: Hash characters in the strings will be replaced by
 # newlines. These are used to lay out the dialog.
 
-Title=
+Title=Security Warning
 MixedContentMessage=You have requested an encrypted page that contains some unencrypted information. Information that you see or enter on this page could easily be read by a third party.
 LeaveSecureMessage=You are about to leave an encrypted page. Information you send or receive from now on could easily be read by a third party.
 EnterSecureMessage=You have requested an encrypted page. The web site has identified itself correctly, and information you see or enter on this page can't easily be read by a third party.

security/manager/ssl/resources/locale/en-US/security.properties

@@ -22,7 +22,7 @@
 # Note: Hash characters in the strings will be replaced by
 # newlines. These are used to lay out the dialog.
 
-Title=
+Title=Security Warning
 MixedContentMessage=You have requested an encrypted page that contains some unencrypted information. Information that you see or enter on this page could easily be read by a third party.
 LeaveSecureMessage=You are about to leave an encrypted page. Information you send or receive from now on could easily be read by a third party.
 EnterSecureMessage=You have requested an encrypted page. The web site has identified itself correctly, and information you see or enter on this page can't easily be read by a third party.