Added Photoswipe and jQuery-UI CSS minification

.gitignore

@@ -20,6 +20,9 @@ none
 
 # Compiled CSS
 /assets/css/*.css
+/assets/css/photoswipe/*.min.css
+/assets/css/photoswipe/default-skin/*.min.css
+/assets/css/jquery-ui/*.min.css
 
 # Minified JS
 /assets/js/admin/*.min.js

Gruntfile.js

@@ -148,11 +148,36 @@ module.exports = function( grunt ) {
 		// Minify all .css files.
 		cssmin: {
 			minify: {
-				expand: true,
-				cwd: '<%= dirs.css %>/',
-				src: ['*.css'],
-				dest: '<%= dirs.css %>/',
-				ext: '.css'
+				files: [
+					{
+						expand: true,
+						cwd: '<%= dirs.css %>/',
+						src: ['*.css'],
+						dest: '<%= dirs.css %>/',
+						ext: '.css'
+					},
+					{
+						expand: true,
+						cwd: '<%= dirs.css %>/jquery-ui/',
+						src: ['*.css', '!*.min.css'],
+						dest: '<%= dirs.css %>/jquery-ui/',
+						ext: '.min.css'
+					},
+					{
+						expand: true,
+						cwd: '<%= dirs.css %>/photoswipe/',
+						src: ['*.css', '!*.min.css'],
+						dest: '<%= dirs.css %>/photoswipe/',
+						ext: '.min.css'
+					},
+					{
+						expand: true,
+						cwd: '<%= dirs.css %>/photoswipe/default-skin/',
+						src: ['*.css', '!*.min.css'],
+						dest: '<%= dirs.css %>/photoswipe/default-skin/',
+						ext: '.min.css'
+					}
+				]
 			}
 		},
 

includes/class-wc-frontend-scripts.php

@@ -307,13 +307,13 @@ class WC_Frontend_Scripts {
 	private static function register_styles() {
 		$register_styles = array(
 			'photoswipe'                  => array(
-				'src'     => self::get_asset_url( 'assets/css/photoswipe/photoswipe.css' ),
+				'src'     => self::get_asset_url( 'assets/css/photoswipe/photoswipe.min.css' ),
 				'deps'    => array(),
 				'version' => WC_VERSION,
 				'has_rtl' => false,
 			),
 			'photoswipe-default-skin'     => array(
-				'src'     => self::get_asset_url( 'assets/css/photoswipe/default-skin/default-skin.css' ),
+				'src'     => self::get_asset_url( 'assets/css/photoswipe/default-skin/default-skin.min.css' ),
 				'deps'    => array( 'photoswipe' ),
 				'version' => WC_VERSION,
 				'has_rtl' => false,