Section subscription modified, a small design

Signed-off-by: Miguel Angel Gordian <miguel.angel@codeandomexico.org>
Button and font-size changed

Signed-off-by: Miguel Angel Gordian <miguel.angel@codeandomexico.org>
Deleted CIC logo

Signed-off-by: Miguel Angel Gordian <miguel.angel@codeandomexico.org>
Changed margin in logos

Signed-off-by: Miguel Angel Gordian <miguel.angel@codeandomexico.org>
Merge pull request #1 from zoek1/remove-logo

The button "Suscríbeme" was corrected and removed the logo CIC
Merge pull request #19 from zoek1/development

Section subscription was added for the template. It is integrated with the Mailchimp lists.
Now you can see above the sponsors, allies and community a form to subscribe yourself for updates about open data.