server: move non-servery bits to hook

server: move non-servery bits to hook

NOTE: CRACK. Most of it still needs to move, but hook isn't quite the right
place. Working out where it should really go before proposing.

The only remaining bit of server is Server; the contexts and commands have
moved to hook, and HookContext became plain Context, while other names were
left as-is.

I am almost entirely certain that more steps will be required after this
before we hit on the right place/name/shape for everything, but I am also
confident that this is a step in a good direction.

https://code.launchpad.net/~fwereade/juju-core/move-hook-context/+merge/127227

(do not edit description out of merge proposal)

[fwereade, 2012-10-01 10:24:34]

Please take a look.

[rog, 2012-10-01 10:58:49]

On 2012/10/01 10:24:34, fwereade wrote:
> Please take a look.

LGTM. hook.Context seems right.