First version that requests the creation of new invited servers.
Make message fields more uniform.
Update Mandrill template.
Log transaction collisions.
Update Lantern for latest version of constants.
Make communications with EC2 servers more like those with the Lantern client.

This includes invsrvlauncher and lantern-peer instances.
Manage installers in S3.
Update Mandrill template to per-inviter S3-hosted installers.
Merge branch 'master' into aws, integrate Leah's invite changes.

Conflicts:
	src/org/lantern/LanternControllerConstants.java
	src/org/lantern/MailChimpApi.java
	src/org/lantern/MandrillEmailer.java
	src/org/lantern/XmppAvailableServlet.java
	src/org/lantern/data/Dao.java
	src/org/lantern/data/LanternUser.java
	war/WEB-INF/lib/lantern-1.0-SNAPSHOT.jar
Compatibility with old clients, use Invite 'table'.
Fallback installer location.
Set Debian installer filenames to '32bit','64bit'.
Fix txnification of getAndIncrementLeastUsedBucket.
Update client version.
Remove unused stuff.
Make Invite ancestor groups by inviter.

GAE transactions only support queries within the same ancestor
group.  This will make sure we notify everyone who was invited
before the EC2 instance for this inviter came up, avoiding race
conditions.

Giving the same guarantees for old invites would be more
involved and pointless anyway, since people invited through
old lantern-controllers have already received their installation
e-mail.  We still try and e-mail them so they get a chance to
upgrade, but we'll notify everyone with old clients through
other means eventually.
Merge branch 'master' into aws

Conflicts:
	.classpath
Key LanternInstances by full jabberId.

This preserves old behavior, and I don't think we are guaranteed
that XMPP resources (instanceIds) are guaranteed to be globally
unique.  (I don't know whether jabberIds are globally unique
forever, but a collision would be less problematic if we don't
mix up users).

Also added a bunch of overly verbose comments since this part is
prone to confusion.
Minor cleanup.
Remove minor duplication of lantern-common utils.