:zap: [Enhance] Prettify icons and input placeholders

index.html

@@ -77,7 +77,7 @@
             <div class="my-1 row no-gutters justify-content-start">
                 <div class="col-auto">
                     <button id="chat-history-sidebar-toggle-button" class="btn px-0">
-                        <i class="fa fa-history"></i>
+                        <i class="fa fa-bars"></i>
                     </button>
                 </div>
                 <div class="col-auto">
@@ -116,7 +116,7 @@
             <div class="my-2 row no-gutters">
                 <div class="col-auto pr-0">
                     <button id="new-chat-session" class="btn px-0">
-                        <i class="fa fa-compass"></i>
+                        <i class="fa fa-plus-circle"></i>
                     </button>
                 </div>
                 <div class="col px-0">

networks/endpoint_storage.js

@@ -34,12 +34,12 @@ class EndpointStorage {
                 </div>
                 <div class="col pl-0">
                     <input class="form-control endpoint-input" rows="1"
-                        placeholder="Input Endpoint URL"
+                        placeholder="Input Endpoint URL, don't add /v1"
                     ></input>
                 </div>
                 <div class="col pl-0">
                     <input class="form-control api-key-input" rows="1"
-                        placeholder="Input API Key, then click √"
+                        placeholder="Input API Key, then click ✔️"
                     ></input>
                 </div>
                 <div class="col-auto px-0">