[mod] simple theme: set height of embedded content (iframe)

This commit sets appropriate height of the (embedded) player from:

- soundcloud
- mixcloud
- deezer

Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>

searx/static/themes/simple/src/less/style.less

@@ -17,6 +17,7 @@
 @import "autocomplete.less";
 @import "detail.less";
 @import "animations.less";
+@import "embedded.less";
 
 // for index.html template
 @import "index.less";