Extract 'LEFT' constant to 'constants' file

Author: pel-daniel

src/components/constants.js

@@ -86,9 +86,12 @@ const TestInput = {
   yOffset: 60
 }
 
+const LEFT = 0
+
 export default {
   Brick,
   MainBrick,
+  LEFT,
   Pipe,
   Primitive,
   Slot,

src/containers/Draggable.js

@@ -1,7 +1,6 @@
 import { connect } from 'react-redux'
 import { startDrag } from '../actions'
-
-const LEFT = 0
+import { LEFT } from '../components/constants'
 
 const mapDispatchToProps = (dispatch) => {
   return {

src/utils/index.js

@@ -1,4 +1,5 @@
 import { selectElement } from '../actions'
+import { LEFT } from '../components/constants'
 
 export * from './slotSelection'
 export * from './slotPosition'
@@ -7,9 +8,6 @@ export const isNotEmpty = (object) => {
   return Object.keys(object).length > 0
 }
 
-
-const LEFT = 0
-
 export const handleSelectElement = (dispatch) => {
   return (elementId, mouseEvent) => {
     if(mouseEvent.button != LEFT)