Added system option to enable case insensitive urls. (#1638)

system/blueprints/config/system.yaml

@@ -1163,6 +1163,17 @@ form:
                     validate:
                         type: bool
 
+                case_insensitive_urls:
+                    type: toggle
+                    label: PLUGIN_ADMIN.CASE_INSENSITIVE_URLS
+                    highlight: 0
+                    help: PLUGIN_ADMIN.CASE_INSENSITIVE_URLS_HELP
+                    options:
+                        1: PLUGIN_ADMIN.YES
+                        0: PLUGIN_ADMIN.NO
+                    validate:
+                        type: bool
+
                 param_sep:
                     type: select
                     size: medium

system/src/Grav/Common/Uri.php

@@ -286,6 +286,11 @@ class Uri
 
         $this->url = $this->base . $this->uri;
 
+        // if case insensitive urls is enabled, lowercase the url
+        if( $grav['config']->get('system.case_insensitive_urls') ){
+            $this->url = strtolower($this->url);
+        }
+
         // get any params and remove them
         $uri = str_replace($this->root, '', $this->url);