Add special section to remove cache notice in admin

[Vinai]

In the magento admin, often the message "Some or more caches are invalidated" is displayed. Often this message is not actually true. The cache records where already removed, however, the cache state is also saved as a cache record.

Out of the box the specific cache has to be cleaned through the UI, or a complete flush has to be made, to get rid of the message.

I would like to have a special "type" so I can get rid of the message via the command line, without doing a full cache flush. Something like cache-clean.js notice. There could also be a hotkey for that action. It would remove only the cache record by ID that saves the cache invalidation state.,

[seyuf]