COMPASS-831 Bug fix for COMPASS-791

[satyasinha]

This is an attempt to fix the bug brought on via COMPASS-791 where if user returns to the same collection they were after going to a database/instance level CRUD and Schema doesn't reload.

DO NOT CUT ANY BRANCHES with COMPASS-791 without this fix

EDIT: This is now using the naive implementation, where all namespace changes trigger a query changed store event, and the collection level stores change only if the namespace is a collection

[durran]

I rebased against master and tested this locally - works for me. Waiting on build to merge unless there is anything else that needs to go in here.

[durran]

This is currently failing the unit tests:

  1) ChartStoreIntegration queryCache after clicking apply the queryCache is populated:

      Uncaught AssertionError: expected {} to deeply equal { Object (project, sort, ...) }
      + expected - actual

      -{}
      +{
      +  "filter": {
      +    "foo": 1
      +  }
      +  "limit": 0
      +  "maxTimeMS": 10000
      +  "ns": "db.testing"
      +  "project": [null]
      +  "queryState": "apply"
      +  "skip": 0
      +  "sort": {
      +    "_id": 1
      +  }
      +}
      
      at Assertion.assertEqual (/Users/modetojoy/work/10gen/compass/node_modules/chai/lib/chai/core/assertions.js:485:19)
      at Assertion.ctx.(anonymous function) [as equal] (/Users/modetojoy/work/10gen/compass/node_modules/chai/lib/chai/utils/addMethod.js:41:25)
      at setTimeout (/Users/modetojoy/work/10gen/compass/test/renderer/chart.store.integration.test.js:64:39)

[satyasinha]

My bad, I included the chart store as part of the fix but it doesn't need it at the moment.