Progress bars on charts

When your charts need to be updated for example, when you've just added a new address, or your portfolio has not updated in a while you will now be shown a progress bar until the chart has been updated. This is because we have to update your accounts remotely, and these tasks are placed into a remote job queue.

Charts will now also display the previous values, rather than just "calculating", while this calculation takes place.

These features were suggested by one of our user testers, so thank you! If you have your own feedback or ideas, please let us know!