Reduce permissions requested.

Some of the permissions were redundant. Also removed the outgoing
sockets permission for now, as the copyright alerts index update feature
that it's meant for was broken with the API authentication I added
later.
Temporarily disable copyright alerts index update

Since the post request is currently being rejected with a 403, useless
to keep this in until it's fixed.

Just changed the name of the building block it's detecting to enable the
feature. Since the name should never be found, it'll never enable the
feature.
Remove unused import, change deploy IP to host.

The deployment target for the ant build used to be an IP for my
developers VM. Things broke when the dev vm's IP changed, so I'm now
just aliasing the IP to a hostname, bblvm, in my hosts file and using
that as the target.
Add cookie session id to index update call.

When calling the Copyright Alerts building block to update indexes on
files, it requires an authenticated Blackboard user session in order to
succeed. Luckily, it looks like we can obtain the user's session id from
BbSession. Setting the Cookie http header with the session id seems to
have let us in as an authenticated user.
Refuse real time index update if too many files.

If there are too many files being updated, it'll just have to wait for
the next full index scan.