New version of PeerDB.
Removing unnecessary event handling on highlights control.
Updated APM package.
Make Travis CI tests run serially.

Otherwise there was interference between packages and tests were
failing. See https://github.com/meteor/meteor/issues/1579
Run all tests, don't stop on the first failed.
Use stacktrace package for getting error locations.
New version of our fork of Meteor without stacktrace code changes.

We are now using special package for this and do not have to "improve"
the code used by Meteor to get stacktrace and caller.
Merge branch 'master' into annotation-references

Conflicts:
	.meteor/packages