utilities: various changes in Cache - Tree::erase is not yet implemented.
status_server: ripped out kernel log in the status server's HTML page.

Also, never do dynamic memory stuff in a Log callback.
vfs: update cache callback to not lock for cache eviction, as we can't really reschedule during one
kernel: Spinlock deadlock breakpoint log now contains the return address of the caller as well as of the owner of the lock.
x86: update final OOM (if no caches could be cleared) to be a panic if the FATAL() returns. Remove locking in initialisationDone, as it's... unnecessary?
debugger: Suspended state for the Threads command.