Position and style the channel editor correctly

Fix a bug where some channel updates would be lost
Add channel name sanitization before storing in the database

styles/src/style_tree/collab_panel.ts

@@ -316,6 +316,11 @@ export default function contacts_panel(): any {
                 },
             },
         }),
-        face_overlap: 8
+        face_overlap: 8,
+        channel_editor: {
+            padding: {
+                left: 8,
+            }
+        }
     }
 }