More routing - "Update Tab" button should lead back to "tabs" section
Everything is in the title really. When you click "Update Tab" it should take you back to the "Tabs" section. At the moment it just appears to reload the page and then the tab is updated, but there is nothing that actually tells you that the tab has been updated, other than the page reloads.
Going back to the tabs page, and then having that notification drop-down (green drop-down) like when updating media would be the best solution if you ask me.