Add localized support for social security number or equivalent

Localization of US social security number and Canadian Social insurance
number.
new es_MX (Mexico) provider
[es_MX] Updated states and abbr (from official list, INEGI)
[es_MX] Updated countries list (from UN.org)
Update Canada SSN/SIN provider to create a valid number

The first revision generated a random number in the correct format.
This commit creates a SIN number that passes the checksum as described
here http://http://en.wikipedia.org/wiki/Social_Insurance_Number
Danish Person Support

Danish Person Support
Revert "Danish Person Support"

This reverts commit cabb0a0a4edfd05dab62216b45f4b787bd7181c3.
Basic Danish Person Support

Added in Basic Danish Person Support
Added el_GR locale
Added fi_FI
Spanish localization package
Spanish person provider
Spanish phone number provider
Spanish address provider
Added es_ES as available locale setting
Readme file for spanish localization
Corrected misspelling in example name on default person provider
[es_MX] Initial es_MX providers: address & person
[es_MX] There's no suffixes on es_MX, removing and solving some error on test
[es_MX] company providers