Linting fixes for frontend following eslint package upgrade

frontend/src/Settings/Metadata/Metadata/EditMetadataModalConnector.js

@@ -21,7 +21,7 @@ class EditMetadataModalConnector extends Component {
   onModalClose = () => {
     this.props.dispatchClearPendingChanges({ section: 'metadata' });
     this.props.onModalClose();
-  }
+  };
 
   //
   // Render

frontend/src/Settings/Metadata/Metadata/EditMetadataModalContentConnector.js

@@ -56,15 +56,15 @@ class EditMetadataModalContentConnector extends Component {
 
   onInputChange = ({ name, value }) => {
     this.props.setMetadataValue({ name, value });
-  }
+  };
 
   onFieldChange = ({ name, value }) => {
     this.props.setMetadataFieldValue({ name, value });
-  }
+  };
 
   onSavePress = () => {
     this.props.saveMetadata({ id: this.props.id });
-  }
+  };
 
   //
   // Render

frontend/src/Settings/Metadata/Metadata/Metadata.js

@@ -25,11 +25,11 @@ class Metadata extends Component {
 
   onEditMetadataPress = () => {
     this.setState({ isEditMetadataModalOpen: true });
-  }
+  };
 
   onEditMetadataModalClose = () => {
     this.setState({ isEditMetadataModalOpen: false });
-  }
+  };
 
   //
   // Render

frontend/src/Settings/Metadata/MetadataSettings.js

@@ -27,17 +27,17 @@ class MetadataSettings extends Component {
 
   onChildMounted = (saveCallback) => {
     this._saveCallback = saveCallback;
-  }
+  };
 
   onChildStateChange = (payload) => {
     this.setState(payload);
-  }
+  };
 
   onSavePress = () => {
     if (this._saveCallback) {
       this._saveCallback();
     }
-  }
+  };
 
   //
   // Render

frontend/src/Settings/Metadata/Options/MetadataOptionsConnector.js

@@ -72,7 +72,7 @@ class MetadataOptionsConnector extends Component {
 
   onInputChange = ({ name, value }) => {
     this.props.dispatchSetMetadataOptionsValue({ name, value });
-  }
+  };
 
   //
   // Render