清理caches
Merge branch 'master' of https://github.com/menghxj/perilla

Conflicts:
	caches/caches_commons/caches_data/category_content.cache.php
	caches/caches_commons/caches_data/category_content_1.cache.php
	caches/caches_commons/caches_data/category_items_1.cache.php
	caches/error_log.php
	index.html