Include avatar and language in serviceData when user signs in to Twitter
Remove trailing whitespace

As per the "Whitespace" section of the Meteor style guide, remove trailing whitespace.
https://github.com/meteor/meteor/wiki/Meteor-Style-Guide
Fix spelling error in find_upwards() comments
Fixed #801
Added som tests for fix #801
Fixed reactive each

Mentioned by Chris Mather on google talk
Fix annoying bug in opera where deleting from a doc as you iterate doesn't work right.
Merge branch 'master' into devel
Merge branch 'devel-#801-fixed' of git://github.com/raix/meteor into raix-815
Merge branch 'raix-815' into devel. Fixes #815.
Fix allow_tests instability.

  Meteor.apply('login', [], {wait: true});
  Meteor.call('setUpTests');  // creates some publishers
  Meteor.subscribe('oneOfThosePublishers');

The client will send the subscribe call before the setUpTests call due to
login's wait-ness, and then the subscribe will fail. We were basically doing
that in allow_tests.
Merge branch 'remove-trailing-whitespace' of git://github.com/blackcoat/meteor into blackcoat-789.

Closes #789.
Merge branch 'blackcoat-789' into devel. Fixes #789.
Merge branch 'update-twitter-service-data-to-include-avatars-and-lang' of git://github.com/timhaines/meteor into timhaines-788
Merge branch 'timhaines-788' into devel. Fixes #788.
Update History.md with recent pull request merges.
test for added from two different subs
Merge branch 'devel' of github.com:meteor/meteor into devel
Avoid crash on spiderable errors. Fixes #832.
Comment only.