Comment 14 for bug 16953

Issue happends around line 721 in src/cmdline/cmdline_prompt.cc, from the comment in that section:
      // These strings are used to compare in a translation-invariant
      // way, so that "yes" and "no" are always valid inputs; if the
      // user can't enter the translated string for some reason,
      // he/she can always enter the fallback strings.
A function can be added to take words with accents and convert it to non accent ones, i.e change é for e, í for i and so on