(Issue 369) Rather than wait timeout, wait until MQ processing finishes
(Issue 369) Wait for MQ to empty in searchRefreshed. Also delay after refresh command.
Forcing reset of activity configuration to defaults after each test.
Use getMultipleContentItems + minor doc fixes
Merge pull request #395 from mrvisser/issue-388-followup

(Issue 388 Followup) Use getMultipleContentItems + minor doc fixes
Merge branch 'master' into issue-369

Conflicts:
	node_modules/oae-activity/lib/test/util.js
	node_modules/oae-search/lib/test/util.js
	node_modules/oae-util/lib/mq.js
Synchronizing many race conditions:

* Give MQ ability to notify when local queue is empty
* Emit event when local config refreshed
* Emit event when local auth strategies refreshed
* Resolve issue with out-of-order indexing operations
Remove notion of 'COLLECT_DELAY'
Remove search and activity delays
Changes from self-review
More code clean-up from review
Fixing race condition in file cleaner
(CassandraPaging) Make paging columns suck less
Review: avoid listener leak, emit refreshedStrategies for user tenants not global
Fix refreshedStrategies event parameter to be tenant object
Merge pull request #369 from mrvisser/issue-369

Look at intermittently failing tests
Merge branch 'master' into cassandra-paging
Review fixes
Merge pull request #397 from mrvisser/cassandra-paging

Make paging columns suck less
Merge branch 'master' into issue-342

* master:
  Review fixes
  Fix refreshedStrategies event parameter to be tenant object
  Review: avoid listener leak, emit refreshedStrategies for user tenants not global
  (CassandraPaging) Make paging columns suck less
  Fixing race condition in file cleaner
  More code clean-up from review
  Changes from self-review
  Remove search and activity delays
  Remove notion of 'COLLECT_DELAY'
  Synchronizing many race conditions:
  Use getMultipleContentItems + minor doc fixes
  Forcing reset of activity configuration to defaults after each test.
  (Issue 369) Wait for MQ to empty in searchRefreshed. Also delay after refresh command.
  (Issue 369) Rather than wait timeout, wait until MQ processing finishes