Expose UI for renaming admin settings

webui/source/templates/ajax/admin/rename-setting.tpl

@@ -0,0 +1,44 @@
+{if $confirm}
+    {if $success}
+        "actions": {
+            "rename_setting_confirm": {
+                "old_name": {$old_name|json_encode},
+                "old_id": {$old_id|json_encode},
+                "name": {$name|json_encode},
+                {include file="fragments/admin-setting-row.tpl" assign="content"}
+                "content": {$content|json_encode}
+            }
+        },
+    {/if}
+    
+    "success": {$success|json_encode}
+{else}
+    "page_replacements": {
+        "dialogheadertitle": {
+            "content": "Rename Setting"
+        },
+        
+        "dialogcontent": {
+            {include file="fragments/rename-setting-dialog.tpl" assign="content"}
+            "content": {$content|json_encode}
+        }
+    },
+    
+    "dialog": {
+        "show": true,
+        "buttons": {
+            "type": "okcancel",
+            "actions": {
+                "ok": [
+                    "rename_setting",
+                    "close-dialog"
+                ],
+                "cancel": "close-dialog"
+            },
+            "params": {
+                "name": {$name|json_encode},
+                "new_name_field": "settings_rename_name" 
+            }
+        }
+    }
+{/if}

webui/source/templates/fragments/admin-setting-row.tpl

@@ -2,6 +2,7 @@
     <td>
         <p>
             {$name}<br />
+            <input type="button" id="setting_{$id}_rename" value="Rename" onclick="rc.settings.rename_setting('{$id}', '{$name}');" />
             <input type="button" id="setting_{$id}_remove" value="Remove" onclick="rc.settings.remove_setting('{$id}', '{$name}');" />
         </p>
     </td>

webui/source/templates/fragments/rename-setting-dialog.tpl

@@ -0,0 +1,6 @@
+<div>
+    <p>
+        Enter a new name for setting '{$name|escape}' below.
+    </p>
+    <input type="text" id="settings_rename_name" value="" />
+</div>