Print pretty JSON.
Fix error when viewing user by ID.
Add created_at and updated_at columns to users table.
Prep. for simplifying code by creating newer, simpler function.
Simplify _columns_exist function.
Move function closer to similar functions and update comment.
Rename private function.
Prepare for preventing manually setting the 'updated_at' column.
Update reference to renamed function.
Fix boolean logic.
Simplify the code for disallowing changes to the ID field.
Update label.
Clean up get_row function.
Create manual setting of created_at column.
Rename local variable.
Modify message text.
Remove unneeded, pointless argument.
Remove redundant check.
Fix requiring of wrong field.
Rename function.