added UserTask model and associations
added display of assigned team members to tasks
added additional styling
added basic droppable functionality
added full functional drag and drop of team members to a task, including newly added tasks and users
removed unused files
added effect when adding team member
refactored my-tasks to show only tasks the user is assigned
refactored adding user to project autocomplete, to choose user on selection of dropdown
added show and hide of team menu on project page