deposit: translated title field

* Adds translated title field if the selected language isn't English.

Signed-off-by: Pedro Gaudêncio <pedro.gaudencio@cern.ch>
deposit: language underneath title

* Moves both the language and the translated title fields underneath the main
  title field.

Signed-off-by: Pedro Gaudêncio <pedro.gaudencio@cern.ch>