Add message history to frontend

app/src/components/Tree/Tree.tsx

@@ -108,7 +108,7 @@ class Tree extends React.Component<Props, TreeState> {
     }
 
     return (
-      <Typography style={style}>
+      <div style={style}>
         <TreeNode
           animateChages={true}
           autoExpandLimit={this.props.autoExpandLimit}
@@ -120,7 +120,7 @@ class Tree extends React.Component<Props, TreeState> {
           key="rootNode"
           lastUpdate={this.state.tree.lastUpdate}
         />
-      </Typography>
+      </div>
     )
   }
 }

app/src/components/Tree/TreeNodeTitle.tsx

@@ -59,7 +59,7 @@ class TreeNodeTitle extends React.Component<TreeNodeProps, {}> {
 
   private renderValue() {
     const style: React.CSSProperties = {
-      width: '15em',
+      maxWidth: '15em',
       whiteSpace: 'nowrap',
       overflow: 'hidden',
       textOverflow: 'ellipsis',