Add vanilla preset searcher and loader

src/styles/global.css

@@ -184,7 +184,7 @@ nav > .toggle span {
 
 .tree {
   display: flow-root;
-  padding: 16px 16px 50vh;
+  padding: 44px 16px 50vh;
   height: 100%;
   overflow: auto;
 }
@@ -231,7 +231,7 @@ nav > .toggle span {
   margin-right: 5px;
 }
 
-.panel-menu {
+.panel-menu:not(.no-relative) {
   position: relative;
 }
 
@@ -336,6 +336,7 @@ nav > .toggle span {
   border-bottom-left-radius: 0px;
 }
 
+.panel-menu .result-list .btn:first-child,
 .btn-group .btn:not(:first-child) {
   border-top-right-radius: 0px;
   border-top-left-radius: 0px;
@@ -356,11 +357,37 @@ nav > .toggle span {
   width: 100px;
 }
 
+.btn.btn.large-input {
+  padding: 5px;
+  padding-left: 11px;
+}
+
+.btn.large-input input {
+  width: 100%;
+  height: 100%;
+  margin-right: 0;
+}
+
 .btn a {
   color: var(--btn-text);
   text-decoration: none;
 }
 
+.panel-menu .result-list {
+  display: block;
+  width: 380px;
+  height: unset;
+  overflow-y: auto;
+  overflow-x: hidden;
+  
+  max-height: 240px;
+}
+
+.panel-menu.disabled {
+  display: none;
+  margin-right: 0;
+}
+
 .errors {
   position: fixed;
   display: flex;
@@ -588,10 +615,6 @@ nav > .toggle span {
     height: calc(100vh - 98px);
   }
 
-  .tree {
-    padding-top: 44px;
-  }
-
   .tree-panel + .gutter {
     display: none;
   }