List of Cached Libraries

[d12frosted]

We should show the list of cached library folders. I am not sure how to visualize it - the overall design is a matter of change in future, but think about following points.

• [x] List all cached directories.
• [x] Calculate size of each cached library directory.
• [ ] Show total size of cache directory.
• [ ] Make it possible to remove cached library from this list.
• [ ] Show the date of cache creation, because sometimes it’s critical to know in order to make switch as fast as possible