Add warnings

[jonrkarr]

• [x] Inconsistent curve/surface axes
• [x] Duplicate data set labels
• [x] Tasks that don't contribute to outputs
• [x] Data generators that don't contribute to outputs
• [x] Data generators for reports/plots may have inconsistent shapes because from different kinds of tasks
  • [x] Different kinds of simulations (e.g., time course vs steady-state)
  • [x] Different kinds of tasks (basic vs. repeated)
• [x] Data sets of reports, x/y of curves, x/y/z of surfaces have consistent shapes
  • [x] Different kinds of simulations (e.g., time course vs steady-state)
  • [x] Different kinds of tasks (basic vs. repeated)
  • [x] Subtasks have different shapes