Use the list of accents beastaugh/urlify

The list of accents there is more complete, and will give a better translation.

Path to file: https://github.com/beastaugh/urlify/blob/master/lib/urlify/accents.rb
Correct the code, so it actually compiles.

Changed the transliteration map to be [rune]string, because some of the transliterations can become a two-letter string.
Removed '&' from accents, as it really isn't
Fixed test after changing how accents translates
Merge pull request #1 from frankbille/patch-1

Use the list of accents beastaugh/urlify