Sort entries on the lesson plan overview by start time.
Show virtual entries strictly before the cutoff.
Add comment indicating this helper works on a closed interval.
Add delete buttons to entries on Lesson Plan overview.
Make milestone title on overview same size as entries'.

For visual consistency.
Redirect to :back when deleting lesson plan entry.
Redirect to :back when deleting a milestone.
Add milestone delete button on overview, tweak alignment.
Move delete button for milestones to same row as fields.
Extract method for getting list of all milestones.
Use entries controller to handle lesson plan overview.
Only show virtual milestones with >0 editable entries.
Add .no-margin helper class.
Tweak alignment of virtual milestone titles on overview.
Rely on controller sort-order for overview milestones.
fix training step anchor tag
remove unused code
allow skipping question in training
fix code rendering problem
Merge branch 'lesson-plan-ordering' of git://github.com/jcheng31/coursemology.org into dev/raymoond_dev