Ok, have an ajax loading screen that covers the table.

It looks terrible but the rest is just markup and styles.
Loading div centers properly now.  Added gulp autoprefixer.
Ajax loading indicator - now riding spinners.

Its messy but it works.  I feel I should abstract this into its own directive or something, or at least a service.
Position the Loading message correctly, and if the ajax starts taking more than 5 seconds, show a message
Merge branch 'feature/ajax-loading-indicators' into develop