FS: Individual Campaigns Page + creating a new step

[skassam21]

• POST request for creating a step -> type, template details (embedded in the campaign)
• Integrate with the individual campaigns page + the new step dialog
• Once a step is created, update the campaigns page to show the steps
• Add the sidebar to the campaigns page - only Summary + Prospects option
• Summary will show the adding of the steps, and the steps, while prospects will show all the prospects for that campaign