Update site/admin footers following website launch (#180)

Fixes https://github.com/pressbooks/pressbooks/issues/1690

dist/mix-manifest.json

@@ -1,9 +1,9 @@
 {
-    "/scripts/aldine.js": "/scripts/aldine.js?id=9c733367c69402ea3d31",
-    "/styles/aldine.css": "/styles/aldine.css?id=6a420921e1b3f0f42695",
+    "/scripts/aldine.js": "/scripts/aldine.js?id=8c16534d2cd140d3b0e2",
+    "/styles/aldine.css": "/styles/aldine.css?id=4127dbd3417e90a40d36",
     "/styles/editor.css": "/styles/editor.css?id=c45cb52a8c16b5642bf6",
     "/scripts/call-to-action.js": "/scripts/call-to-action.js?id=14b2ac09b5fc52660522",
-    "/scripts/catalog-admin.js": "/scripts/catalog-admin.js?id=4f9c16093cec65a0274f",
+    "/scripts/catalog-admin.js": "/scripts/catalog-admin.js?id=43511dff74631c962103",
     "/scripts/customizer.js": "/scripts/customizer.js?id=cd5dc6157cc6b89dc521",
     "/scripts/page-section.js": "/scripts/page-section.js?id=03bd80d7f2c2727b2b4f"
 }

footer.php

@@ -76,18 +76,14 @@ $pb_network_contact_form = get_option( 'pb_network_contact_form' );
 				<?php /* translators: %s Pressbooks */ ?>
 				<p class="footer__pressbooks__links__title"><a href="https://pressbooks.com"><?php printf( __( 'Powered by %s', 'pressbooks-aldine' ), '<span class="pressbooks">Pressbooks</span>' ); ?></a></p>
 				<ul class="footer__pressbooks__links__list">
-					<li><a href="https://pressbooks.org/"><?php _e( 'Open Source', 'pressbooks-aldine' ); ?></a> |</li>
-					<li><a href="https://pressbooks.education/"><?php _e( 'Open Textbooks', 'pressbooks-aldine' ); ?></a> |</li>
-					<li><a href="https://pressbooks.com/"><?php _e( 'Open Book Publishing', 'pressbooks-aldine' ); ?></a> |</li>
-					<li><a href="https://pressbooks.education/about/"><?php _e( 'Learn More', 'pressbooks-aldine' ); ?></a> </li>
+					<li><a href="https://pressbooks.education/help-and-support/"><?php _e( 'Guides and Tutorials', 'pressbooks-aldine' ); ?></a> |</li>
+					<li><a href="<?php echo network_home_url( '/#contact' ); ?>"><?php _e( 'Contact', 'pressbooks-aldine' ); ?></a> </li>
 				</ul>
 			</div>
 			<div class="footer__pressbooks__social">
-				<a class="facebook" href="https://facebook.com/pressbooks2" title="<?php _e( 'Pressbooks on Facebook', 'pressbooks-aldine' ); ?>">
-					<svg class="icon--svg">
-						<use xlink:href="#facebook" />
-					</svg>
-					<span class="screen-reader-text"><?php _e( 'Pressbooks on Facebook', 'pressbooks-aldine' ); ?></span>
+				<a class="facebook" href="https://www.youtube.com/user/pressbooks" title="<?php _e( 'Pressbooks on YouTube', 'pressbooks-aldine' ); ?>">
+					<img class="youtube-link" src="<?php bloginfo( 'template_directory' ); ?>/assets/images/yt_icon_mono_dark.png" alt="YouTube">
+					<span class="screen-reader-text"><?php _e( 'Pressbooks on YouTube', 'pressbooks-aldine' ); ?></span>
 				</a>
 				<a class="twitter" href="https://twitter.com/intent/follow?screen_name=pressbooks" title="<?php _e( 'Pressbooks on Twitter', 'pressbooks-aldine' ); ?>">
 					<svg class="icon--svg">

package.json

@@ -59,10 +59,10 @@
 		"node": ">= 6.9.4"
 	},
 	"devDependencies": {
-		"pressbooks-build-tools": "^1.3.3"
+		"pressbooks-build-tools": "^1.4.3"
 	},
 	"dependencies": {
-		"aetna": "^1.0.0-alpha.24",
+		"aetna": "^1.0.0-alpha.25",
 		"isotope-layout": "^3.0.6",
 		"jquery-bridget": "^2.0.1",
 		"js-cookie": "^2.2.0",