chore: dependency cleanup (#1794)

- removed unnecessary smoothscroll-polyfill (electron is Chromium-only)
- removed deprecated mobx-react-devtools (can be used through browser extension)
- changed settings icon back to original (now called mdi-cog)
- removed electron-rebuild (handled by electron-builder install-app-deps)

2 files changed, 1 insertions, 7 deletions

diff --git a/src/app.js b/src/app.js
index 39b50cb33..e0d2dbc5a 100644
--- a/src/app.js
+++ b/src/app.js
@@ -6,8 +6,6 @@ import { Provider } from 'mobx-react';
 import { syncHistoryWithStore, RouterStore } from 'mobx-react-router';
 import { hashHistory } from 'react-router';
 
-import smoothScroll from 'smoothscroll-polyfill';
-
 import ServerApi from './api/server/ServerApi';
 import LocalApi from './api/server/LocalApi';
 import storeFactory from './stores';
@@ -19,9 +17,6 @@ import TouchBarFactory from './lib/TouchBar';
 import I18N from './I18n';
 import Routes from './routes';
 
-// Add Polyfills
-smoothScroll.polyfill();
-
 // Basic electron Setup
 webFrame.setVisualZoomLevelLimits(1, 1);
 
diff --git a/src/components/layout/Sidebar.js b/src/components/layout/Sidebar.js
index daa5642c3..a9fb73f33 100644
--- a/src/components/layout/Sidebar.js
+++ b/src/components/layout/Sidebar.js
@@ -216,8 +216,7 @@ export default @inject('stores', 'actions') @observer class Sidebar extends Comp
           className="sidebar__button sidebar__button--settings"
           data-tip={`${intl.formatMessage(messages.settings)} (${settingsShortcutKey(false)})`}
         >
-          {/* TODO: Because of https://github.com/Templarian/MaterialDesign-Webfont/issues/81 bug in @mdi/font in 5.9.55, added `mdi-memory` as a fallback */}
-          <i className="mdi mdi-settings mdi-memory" />
+          <i className="mdi mdi-cog" />
           { (this.props.stores.app.updateStatus === this.props.stores.app.updateStatusTypes.AVAILABLE
             || this.props.stores.app.updateStatus === this.props.stores.app.updateStatusTypes.DOWNLOADED) && (
             <span className="update-available">