Attempt to fix parsing issue for 663 and 676 prefixes

References:

- +43 644 1425088 -> http://www.moses-mendelssohn-synagoge.com/index.php/en/sponsor
- +43 676 0000000 -> http://iteh.at/en/contact/
- +43 663 700067  -> http://www.yelp.com/search?cflt=carrental&find_loc=Gmunden%2C+Ober%C3%B6sterreich

However, specs are not passing. This is strange.

  1) plausibility plausible? specific countries is correct for Austria
     Failure/Error: Phony.plausible?('+43 676 0000000').should be_true
       expected: true value
            got: false
     # ./spec/functional/plausibility_spec.rb:124:in `block (4 levels) in <top (required)>'
Merge pull request #139 from aetrion/bugfix/austria

Attempt to fix parsing issue for 663 and 676 prefixes