Prep Plugin for release on WordPress.org

Escape everything that should be escaped.
Add nonce checks where needed.
Sanitize all inputs.
Apply Code style changes across the codebase.
Correct many deprecation notices.
Optimize load order of many filters.

views/dashboard-widgets/current-membership-product-details.php

@@ -38,7 +38,7 @@
 
 	<span class="wu-text-xs wu-uppercase wu-font-bold wu-block">
 
-		<?php _e('Product Description:', 'wp-multisite-waas'); ?>
+		<?php esc_html_e('Product Description:', 'wp-multisite-waas'); ?>
 
 	</span>
 
@@ -48,7 +48,7 @@
 
 	<span class="wu-text-xs wu-uppercase wu-font-bold wu-block">
 
-	<?php _e('Product Characteristics:', 'wp-multisite-waas'); ?>
+	<?php esc_html_e('Product Characteristics:', 'wp-multisite-waas'); ?>
 
 	</span>