Ground finished uploading/running all methods reactive var?

I built a full data entry app that lets users complete hundreds of forms offline. It uses collection inserts and no other methods.

I need some way of telling the user that all the inserts have been set to the sever, ideally with a red/green indicator. I was hopping `Ground.ready()` would do the trick no luck on that end. The reason a red/green state is needed is I would like to tell the user that data (inserts) has been saved and needs to be synced to the server.

To clarify:
- red: offline changes have been made
- green: there are no change (none made or all sent to server)

I really need a `Ground.hasQueue()` (or whatever) reactive var that says there are methods to sync to the server. I could get away with a `myCollection.hasQueue()` method as all inserts are to one collection.

Start by reviewing the existing Ground.ready() behavior and the collection insert queue described in the issue. The work is done when a reactive status distinguishes offline changes from a queue that has no unsent inserts and supports the requested red/green indicator.

Written by the indexing model from the issue text.