Show intro text below converter; improve textarea resizing.
Show intro text below converter; improve textarea resizing.

Textareas are kept in sync if one of them is resized; their initial size is
enlarged to fit the whole content if needed.

ChristianSi/phoneng,ChristianSi/lytspel,ChristianSi/lytspel,ChristianSi/lytspel,ChristianSi/lytspel