Pridané autocomplete="email" do newsletteru (#659)

Pridaný attribute autocomplete="email"

Closes #624

app/views/components/_footer.html.erb

@@ -21,7 +21,7 @@
             <input type="hidden" name="listid" id="listid" value="45">
             <input type="hidden" name="from_url" id="from_url" value="yes">
             <input type="hidden" name="hdn_email_txt" id="hdn_email_txt" value="">
-            <input type="email" name="email" id="email-input" required class="govuk-input sdn-footer__newsletter-input" placeholder="Zadajte emailovú adresu"/>
+            <input type="email" name="email" id="email-input" required class="govuk-input sdn-footer__newsletter-input" autocomplete="email" placeholder="Zadajte emailovú adresu"/>
             <button type="submit" class="govuk-button sdn-footer__newsletter-button">Prihlásiť</button>
           </div>
         </form>