Add code quality improvements.

Author: levino

frontend/package.json

@@ -84,7 +84,6 @@
     "@types/body-parser": "^1.19.0",
     "@types/classnames": "^2.2.10",
     "@types/cors": "^2.8.6",
-    "@types/eslint-plugin-prettier": "^3.1.0",
     "@types/express": "^4.17.3",
     "@types/history": "^4.7.6",
     "@types/jest": "^25.1.4",

frontend/src/app-styles.sass

@@ -6,9 +6,10 @@
   display: none
 
 body
+  // In order to not highlight text etc. while dragging we need to disable these events.
   -webkit-touch-callout: none /* iOS Safari */
   -webkit-user-select: none /* Safari */
   -khtml-user-select: none /* Konqueror HTML */
   -moz-user-select: none /* Old versions of Firefox */
   -ms-user-select: none /* Internet Explorer/Edge */
-  user-select: none
+  user-select: none

frontend/src/js/app/Content.tsx

@@ -47,9 +47,6 @@ const DragPreview = () => {
   if (!display) {
     return null;
   }
-  // eslint-disable-next-line no-console
-  console.log("PREVIEW RENDERED", item.width, item.height, style);
-
   return (
     <PreviewItem width={item.width} height={item.height} style={style}>
       {item.label}
@@ -71,7 +68,7 @@ export const CustomHTML5toTouch = {
       backend: TouchBackend,
       transition: TouchTransition,
       options: {
-        delayTouchStart: 100,
+        delayTouchStart: 100, //This enables touch to scroll and touch and hold to drag.
         ignoreContextMenu: true
       },
       preview: true

frontend/src/js/previous-queries/list/PreviousQuery.tsx

@@ -182,7 +182,6 @@ class PreviousQuery extends React.Component {
         shared={!!query.shared}
         //@ts-ignore
         system={!!query.system || (!query.own && !query.shared)}
-        onContextMenu={e => e.preventDefault()}
       >
         <TopInfos>
           <div>

frontend/typings/react-dnd-multi-backend/index.d.ts

@@ -1 +1 @@
-declare module "react-dnd-multi-backend";
+declare module "react-dnd-multi-backend"; // Currently the DT types for this package are broken (the new API is missing). Until then we any this.