Cacher module: added random seed and fixed settings snafus
Cacher module: added random seed and fixed settings snafus

A new random seed will be created every time the caches are regenerated. This will avoid serving old caches in case of the deletion failing. Fixed settings page removing the cache_exclude setting. Fixed bad method call when clearing cache manually from the settings page.

xenocrat/chyrp-lite,xenocrat/chyrp-lite