[enh] oscar theme redesign added

The original code made by @logico-dev (#559)

searx/static/themes/oscar/less/logicodev/infobox.less

@@ -0,0 +1,37 @@
+.infobox {
+
+    .panel-heading{
+        background-color: @dim-gray;
+
+        .panel-title{
+            font-weight: 700;
+        }
+    }
+
+
+    p{
+        font-family: "DejaVu Serif", Georgia, Cambria, "Times New Roman", Times, serif !important;
+        font-style: italic;
+    }
+
+    .btn{
+        background-color: @green;
+        border: none;
+
+        a{
+            color: white;
+            margin: 5px;
+        }
+    }
+
+    .infobox_part {
+        margin-bottom: 20px;
+        word-wrap: break-word;
+        table-layout: fixed;
+
+    }
+    
+    .infobox_part:last-child {
+        margin-bottom: 0;
+    }
+}