Dict: update hard-coded dictionary names since dict.org has changed them

`eng-fra` is now `fd-eng-fra`, and `moby-thes` is now `moby-thesaurus`.

`dictionaries` output as of now (2014-11-23):

all, bouvier, devil, easton, elements, english, fd-afr-deu, fd-cro-eng, fd-cze-eng, fd-dan-eng, fd-deu-eng, fd-deu-fra, fd-deu-ita, fd-deu-nld, fd-deu-por, fd-eng-ara, fd-eng-cro, fd-eng-cze, fd-eng-deu, fd-eng-fra, fd-eng-hin, fd-eng-hun, fd-eng-iri, fd-eng-ita, fd-eng-lat, fd-eng-nld, fd-eng-por, fd-eng-rom, fd-eng-rus, fd-eng-scr, fd-eng-spa, fd-eng-swa, fd-eng-swe, fd-eng-tur, fd-eng-wel, fd-fra-deu, fd-fra-eng, fd-fra-nld, fd-gla-deu, fd-hin-eng, fd-hun-eng, fd-iri-eng, fd-ita-deu, fd-ita-eng, fd-jpn-deu, fd-lat-deu, fd-lat-eng, fd-nld-deu, fd-nld-eng, fd-nld-fra, fd-por-deu, fd-por-eng, fd-scr-eng, fd-slo-eng, fd-spa-eng, fd-swa-eng, fd-swe-eng, fd-tur-deu, fd-tur-eng, fd-wel-eng, foldoc, gaz2k-counties, gaz2k-places, gaz2k-zips, gcide, hitchcock, jargon, moby-thesaurus, trans, vera, wn, and world02