DE v1.8.4 Changes

Map guide implementation
Diversify the supported widgets
Add link in mail template
Bug fixes

Changed files DE

css/custom.css
customizer/customizer.js
footer.php
functions.php
includes/admin.php
includes/places.php
includes/template.php
includes/theme.php
includes/widgets.php
js/author.js
js/front.js
js/single-place.js
js/update_featured.js
mobile/css/main.css
mobile/js/main.js
mobile/page-blog.php
mobile/page-login.php
mobile/template/modal-contact.php
page-blog.php
page-login.php
search.php
style.css
template-js/modal-authenticate.php
template-js/modal-contact.php
template/comment-place.php