Rename function-exporting JS module files

To match the names of the functions they export, like how the
class-exporting module files have the same name as the class they
export.

src/gui/html/index.html

@@ -460,12 +460,12 @@
   <script src="js/filters.js"></script>
   <script src="js/game.js"></script>
   <script src="js/helpers.js"></script>
-  <script src="js/l10n.js"></script>
+  <script src="js/translateStaticText.js"></script>
   <script src="js/plugin.js"></script>
   <script src="js/query.js"></script>
   <script src="js/state.js"></script>
   <script src="js/translator.js"></script>
-  <script src="js/init.js"></script>
+  <script src="js/initialise.js"></script>
   <script>
     'use strict';
     loot.initialise();