doc: add check for db.tx_Source to Reauth examples

Otherwise it triggers on roundup-admin et al

Author: rouilj

doc/customizing.txt

@@ -1836,6 +1836,12 @@ contents::
            # the user has confirmed their identity
            return
 
+	if db.tx_Source not in ("web"):
+	   # the user is using rest, xmlrpc, command line,
+	   # email (unlikely) which don't support interactive
+	   # verification
+	   return
+	   
         # if the password or email are changing, require id confirmation
         if 'password' in newvalues:
             raise Reauth('Add an optional message to the user')

doc/reference.txt

@@ -1321,6 +1321,12 @@ user to submit each sensitive property separately.  For example::
 		   'at the same time is not allowed. Please '
 		   'submit two changes.')
 
+   if db.tx_Source not in ("web"):
+      # the user is using rest, xmlrpc, command line,
+      # email (unlikely) which don't support interactive
+      # verification
+      return
+
    if 'password' in newvalues and not hasattr(db, 'reauth_done'):
       raise Reauth()