Trailing whitespace is bad for .rst files.

Misc/Vim/vimrc

@@ -43,7 +43,7 @@ highlight BadWhitespace ctermbg=red guibg=red
 " Display tabs at the beginning of a line in Python mode as bad.
 au BufRead,BufNewFile *.py,*.pyw match BadWhitespace /^\t\+/
 " Make trailing whitespace be flagged as bad.
-au BufRead,BufNewFile *.py,*.pyw,*.c,*.h match BadWhitespace /\s\+$/
+au BufRead,BufNewFile *.py,*.pyw,*.c,*.h,*.rst match BadWhitespace /\s\+$/
 
 " Wrap text after a certain number of characters
 " Python: 79