Fixing linting errors in the availability collection
Adding the initial axis labels for the service-availability module.
Wiring up the axis-labels for the module collection.
Fixed lint issues in availability test.
Added getDataByTableFormat to the availability collection.

This is the only collection we have that models two graphs onto one model.

We have some config in here which should probably be stored in the config json.
Pass through the valueAttr for the graph.

We use this inside the table for picking the correct formatting of the value that's being rendered.
Updated table view to formatValues.

Uses the base view to format values instead of doing this in the collection or models.
Merge pull request #238 from alphagov/feature/accessibleServiceAvailability

Feature/accessible service availability