Make most major changes for an updated chat UI (#843)

- Updated references panel
- Use subtle coloring for chat cards
- Chat streaming with train of thought
- Side panel with limited sessions, expandable
- Manage conversation file filters easily from the side panel
- Updated nav menu, easily go to agents/automations/profile
- Upload data from the chat UI (on click attachment icon)
- Slash command pop-up menu, scrollable and selectable
- Dark mode-enabled
- Mostly mobile friendly

src/interface/web/app/components/referencePanel/referencePanel.module.css

@@ -1,31 +0,0 @@
-div.panel {
-    padding: 1rem;
-    border-radius: 1rem;
-    background-color: var(--calm-blue);
-    max-height: 80vh;
-    overflow-y: auto;
-    max-width: auto;
-}
-
-div.panel a {
-    color: var(--intense-green);
-    text-decoration: underline;
-}
-
-div.onlineReference,
-div.contextReference {
-    margin: 4px;
-    border-radius: 8px;
-    padding: 4px;
-}
-
-div.contextReference:hover {
-    cursor: pointer;
-}
-
-div.singleReference {
-    padding: 8px;
-    border-radius: 8px;
-    background-color: var(--frosted-background-color);
-    margin-top: 8px;
-}