修复crud命令生成的radio和checkbox的对齐问题

application/admin/command/Crud/stubs/html/checkbox.stub

@@ -1,4 +1,6 @@
-            
+
+            <div class="checkbox">
             {foreach name="{%fieldList%}" item="vo"}
             <label for="{%fieldName%}-{$key}"><input id="{%fieldName%}-{$key}" name="{%fieldName%}" type="checkbox" value="{$key}" {in name="key" value="{%selectedValue%}"}checked{/in} /> {$vo}</label> 
             {/foreach}
+            </div>

application/admin/command/Crud/stubs/html/radio.stub

@@ -1,4 +1,6 @@
-            
+
+            <div class="radio">
             {foreach name="{%fieldList%}" item="vo"}
             <label for="{%fieldName%}-{$key}"><input id="{%fieldName%}-{$key}" name="{%fieldName%}" type="radio" value="{$key}" {in name="key" value="{%selectedValue%}"}checked{/in} /> {$vo}</label> 
             {/foreach}
+            </div>