moved pygments, static and templates to the pelican/themes/Flex subdir

pelican/themes/Flex/templates/partial/stork.html

@@ -0,0 +1,15 @@
+{% if 'pelican.plugins.search' in PLUGINS %}
+  <script>
+    window.loadStorkIndex = function () {
+      {% if not STORK_VERSION %}
+      stork.initialize("{{ SITEURL }}/{{ THEME_STATIC_DIR }}/stork/stork.wasm")
+      {% endif %}
+      stork.register("sitesearch", "{{ SITEURL }}/search-index.st", { showProgress: false });
+    }
+  </script>
+  {% if STORK_VERSION %}
+  <script src="https://files.stork-search.net/releases/v{{ STORK_VERSION }}/stork.js"></script>
+  {% else %}
+  <script src="{{ SITEURL }}/{{ THEME_STATIC_DIR }}/stork/stork.js"></script>
+  {% endif %}
+{% endif %}