Add in-app project creation/edits

[ryugi]

• Add a projects screen
• Add route for projects
• Add project template (placeholder)
• Add a view for listing all the projects
  • Under each project, list all tasks
  • Make the task list collapsable
• Add a view for creating/updating a new project
• Add a view for deleting a project
• Add a view for creating/updating a new task
• Add a view for deleting a task