feat: add rtl support (#2178)

frontend/src/css/header.css

@@ -135,10 +135,25 @@ header .menu-button {
   z-index: 1;
 }
 
+body.rtl #search #result {
+  direction: ltr;
+}
+
 #search #result>div>*:first-child {
   margin-top: 0;
 }
 
+body.rtl #search #result {
+  direction: rtl;
+  text-align: right;
+}
+
+/*** RTL - Keep search result LTR because it has paths (in english) ***/
+body.rtl #search #result ul>* {
+  direction: ltr;
+  text-align: left;
+}
+
 #search.active #result {
   padding: .5em;
   height: calc(100% - 4em);
@@ -224,6 +239,10 @@ header .menu-button {
   padding: .5em;
 }
 
+body.rtl #search .boxes h3 {
+  text-align: right;
+}
+
 #search .boxes>div {
   display: flex;
   flex-wrap: wrap;