Translate page resources to Spanish.

[MarconiGRF]

To contribute with the translation for your language follow these steps:

1. Find the correct culture code for your language in this list and remember it.
2. On the Resources folder it will have each page resource files, create a new .xml with the filename of your culture code. For example, if your culture code is pt-BR create pt-BR.xml in every page folder.
3. Replace the strings of the en-US.xml version on your version with the correct string translations.
4. Commit the changes and open a new pull request.