Reduce number of prioritized actions in mobile

For mobile view, only display 1 prioritized action in the items,
and for general desktop view, stick to the default 2.

Bug: T141788
Change-Id: Ibf386ee598553ecfb717f07f02688034bbc338c8

modules/ext.echo.init.js

@@ -9,6 +9,9 @@
 	}
 
 	mw.echo = mw.echo || {};
+	mw.echo.config = mw.echo.config || {};
+	// Set default max prioritized action links per item
+	mw.echo.config.maxPrioritizedActions = 2;
 
 	// Activate ooui
 	$( document ).ready( function () {

modules/mw.echo.js

@@ -1,3 +1,4 @@
 ( function ( mw ) {
 	mw.echo = mw.echo || {};
+	mw.echo.config = mw.echo.config || { maxPrioritizedActions: 2 };
 } )( mediaWiki );

modules/special/ext.echo.special.js

@@ -1,5 +1,6 @@
 ( function ( $, mw ) {
 	'use strict';
+
 	/*!
 	 * Echo Special:Notifications page initialization
 	 */
@@ -28,6 +29,10 @@
 				modelManager
 			);
 
+		// Set default max prioritized action links per item.
+		// For general purpose we have 2, for mobile only 1
+		mw.echo.config.maxPrioritizedActions = mw.config.get( 'skin' ) === 'minerva' ? 1 : 2;
+
 		specialPageContainer = new mw.echo.ui.NotificationsInboxWidget(
 			controller,
 			modelManager,

modules/ui/mw.echo.ui.NotificationItemWidget.js

@@ -130,7 +130,7 @@
 			// prioritized explicitly, *except* for items inside a bundle
 			// (where all actions are inside the menu) or there are more than
 			// two prioritized actions (all others go into the menu)
-			isOutsideMenu = !this.bundle && urlObj.prioritized !== undefined && outsideMenuItemCounter < 2;
+			isOutsideMenu = !this.bundle && urlObj.prioritized !== undefined && outsideMenuItemCounter < mw.echo.config.maxPrioritizedActions;
 
 			linkButton = new mw.echo.ui.MenuItemWidget( {
 				icon: urlObj.icon || 'next',