Add onShare prop to enable the share button

src/components/gui/gui.jsx

@@ -84,6 +84,7 @@ const GUIComponent = props => {
         onRequestCloseBackdropLibrary,
         onRequestCloseCostumeLibrary,
         onSeeCommunity,
+        onShare,
         previewInfoVisible,
         targetIsStage,
         soundsTabVisible,
@@ -170,6 +171,7 @@ const GUIComponent = props => {
                     onLogOut={onLogOut}
                     onOpenRegistration={onOpenRegistration}
                     onSeeCommunity={onSeeCommunity}
+                    onShare={onShare}
                     onToggleLoginOpen={onToggleLoginOpen}
                     onUpdateProjectTitle={onUpdateProjectTitle}
                 />
@@ -323,6 +325,7 @@ GUIComponent.propTypes = {
     onRequestCloseBackdropLibrary: PropTypes.func,
     onRequestCloseCostumeLibrary: PropTypes.func,
     onSeeCommunity: PropTypes.func,
+    onShare: PropTypes.func,
     onTabSelect: PropTypes.func,
     onToggleLoginOpen: PropTypes.func,
     onUpdateProjectTitle: PropTypes.func,

src/components/menu-bar/menu-bar.jsx

@@ -196,6 +196,18 @@ class MenuBar extends React.Component {
                 id="gui.menuBar.saveNow"
             />
         );
+        const shareButton = (
+            <Button
+                className={classNames(styles.shareButton)}
+                onClick={this.props.onShare}
+            >
+                <FormattedMessage
+                    defaultMessage="Share"
+                    description="Label for project share button"
+                    id="gui.menuBar.share"
+                />
+            </Button>
+        );
         return (
             <Box
                 className={classNames(styles.menuBar, {
@@ -392,15 +404,11 @@ class MenuBar extends React.Component {
                         </MenuBarItemTooltip>
                     </div>
                     <div className={classNames(styles.menuBarItem)}>
-                        <MenuBarItemTooltip id="share-button">
-                            <Button className={classNames(styles.shareButton)}>
-                                <FormattedMessage
-                                    defaultMessage="Share"
-                                    description="Label for project share button"
-                                    id="gui.menuBar.share"
-                                />
-                            </Button>
-                        </MenuBarItemTooltip>
+                        {this.props.onShare ? shareButton : (
+                            <MenuBarItemTooltip id="share-button">
+                                {shareButton}
+                            </MenuBarItemTooltip>
+                        )}
                     </div>
                     <div className={classNames(styles.menuBarItem, styles.communityButtonWrapper)}>
                         {this.props.enableCommunity ?