rename handle_static to static_files - stop confusing it with file handlers

ext/browser_search/main.php

@@ -24,7 +24,7 @@ class BrowserSearch extends Extension
             $search_title = $config->get_string(SetupConfig::TITLE);
             $search_form_url =  make_link('post/list/{searchTerms}');
             $suggenton_url = make_link('browser_search/')."{searchTerms}";
-            $icon_b64 = base64_encode(file_get_contents("ext/handle_static/static/favicon.ico"));
+            $icon_b64 = base64_encode(file_get_contents("ext/static_files/static/favicon.ico"));
 
             // Now for the XML
             $xml = "

ext/handle_ico/test.php

@@ -4,7 +4,7 @@ class IcoFileHandlerTest extends ShimmiePHPUnitTestCase
     public function testIcoHander()
     {
         $this->log_in_as_user();
-        $image_id = $this->post_image("ext/handle_static/static/favicon.ico", "shimmie favicon");
+        $image_id = $this->post_image("ext/static_files/static/favicon.ico", "shimmie favicon");
 
         $page = $this->get_page("post/view/$image_id");
         $this->assertEquals(200, $page->code);

ext/static_files/info.php

@@ -1,8 +1,8 @@
 <?php declare(strict_types=1);
 
-class HandleStaticInfo extends ExtensionInfo
+class StaticFilesInfo extends ExtensionInfo
 {
-    public const KEY = "handle_static";
+    public const KEY = "static_files";
 
     public $key = self::KEY;
     public $name = "Static File Handler";
@@ -10,6 +10,6 @@ class HandleStaticInfo extends ExtensionInfo
     public $authors = self::SHISH_AUTHOR;
     public $license = self::LICENSE_GPLV2;
     public $visibility = self::VISIBLE_ADMIN;
-    public $description = 'If Shimmie can\'t handle a request, check static files ($theme/static/$filename, then ext/handle_static/static/$filename)';
+    public $description = 'If Shimmie can\'t handle a request, check static files ($theme/static/$filename, then ext/static_files/static/$filename)';
     public $core = true;
 }

ext/static_files/main.php

@@ -1,6 +1,6 @@
 <?php declare(strict_types=1);
 
-class HandleStatic extends Extension
+class StaticFiles extends Extension
 {
     public function onPageRequest(PageRequestEvent $event)
     {
@@ -12,7 +12,7 @@ class HandleStatic extends Extension
             $theme_name = $config->get_string(SetupConfig::THEME, "default");
 
             $theme_file = "themes/$theme_name/static/$f_pagename";
-            $static_file = "ext/handle_static/static/$f_pagename";
+            $static_file = "ext/static_files/static/$f_pagename";
 
             if (file_exists($theme_file) || file_exists($static_file)) {
                 $filename = file_exists($theme_file) ? $theme_file : $static_file;

ext/static_files/test.php

@@ -1,5 +1,5 @@
 <?php declare(strict_types=1);
-class HandleStaticTest extends ShimmiePHPUnitTestCase
+class StaticFilesTest extends ShimmiePHPUnitTestCase
 {
     public function testStaticHandler()
     {