Edited Issue: azure has unapplicable completions [980]

When using blob service, you'll see completions for the other services as well.

Example:
```
var azure = require('azure');
var blobService = azure.createBlobService('', '');
blobService.createTable
```

createTable doesn't exist on blob service, it's on table service!

The list of completions for blob service is extremely long because it includes functions from the other services (createQueue, createSite, listSubscriptions, etc).