Catch errors in `_storePendingCredential` to avoid crashing runner
Another pass at History.md
Suppress logs on javascript: attribute tests
History tweak
Another pass at History.md
Tweak javascript: attribute value error message.
One last little tweak to javascript: error message
Address Blaze XXXs in History.md
Isolate consistent id generation tests
Fix consistent id tests.

We now wait for subscriptions to be ready before calling
methods that affect those collections. Otherwise, when the
callback fires the documents in those collections aren't
guaranteed to be available on the client.
expand DDP heartbeat section in History
Bump a test timeout
Fix IE8 "table assembly" test failure.

We no longer automatically wrap table elements in
a <tbody>.
Simplify mongo-livedata id generation tests
Work towards better mongo-livedata tests.

We should always wait for subscription to be ready
before calling methods if we expect to be able to read
the database within a method callback
Fix some mongo-livedata tests
Wait for subscription ready on another mongo livedata test
Wait for sub ready on another mongo-livedata test
Don't set img tags to javascript: URLs in tests in IE.

IE throws an exception if you set an img src to a javascript: URL.
Fix consistent id tests on IE8

IE8 doesn't support `func.name`