Image upload form: changed help text and choice text for the skip-or-replace-duplicates option.
Image upload form: changed help text and choice text for the skip-or-replace-duplicates option.

DevangS/CoralNet,DevangS/CoralNet,DevangS/CoralNet,DevangS/CoralNet,DevangS/CoralNet,DevangS/CoralNet,DevangS/CoralNet