add support for CSS and PHP skill filtering

Author: TimidRobot

themes/vocabulary_theme/templates/project-ideas.html

@@ -28,6 +28,9 @@ <h1>Open Source Internships: Project Ideas</h1>
           <button type="button" class="button tag filter-btn" data-filter="skill-javascript">
             Skill: JavaScript
           </button>
+          <button type="button" class="button tag filter-btn" data-filter="skill-php">
+            Skill: PHP
+          </button>
           <button type="button" class="button tag filter-btn" data-filter="skill-python">
             Skill: Python
           </button>

webpack/js/ideas.js

@@ -17,7 +17,9 @@ $(document).ready(function(){
       'difficulty-easy',
       'difficulty-medium',
       'difficulty-hard',
+      'skill-css',
       'skill-javascript',
+      'skill-php',
       'skill-python',
       'skill-wordpress',
       'skill-writing'
@@ -92,4 +94,4 @@ $(document).ready(function(){
       toggleBtn($(this));
       return showIdeas(selected);
     });
-  });
+  });