Merge frio-specific share block template into the base template

- Add BIDI support for share blocks
- Remove redundant share block styles

view/theme/quattro/lilac/style.css

@@ -1437,27 +1437,6 @@ section {
 .type-video blockquote {
   padding-left: 1em;
 }
-.shared_header {
-  height: 32px;
-  color: #999;
-  border-top: 1px solid #cccccc;
-  padding-top: 5px;
-  margin-top: 5px;
-}
-.shared_header img {
-  -webkit-border-radius: 4px;
-  -moz-border-radius: 4px;
-  border-radius: 4px;
-  float: left;
-}
-.shared_header span {
-  margin-left: 9px;
-}
-blockquote.shared_content {
-  margin-left: 32px;
-  color: #000;
-  border: none;
-}
 .oembed.video > a.embed_video {
   display: block;
   position: relative;