[Create Timepoint] reduce user pain - go right to Start Next Stage

[christinerogers]

migrated from RM 15638
See also: #5148

Make the Create_timepoint "Submit" button (if no errors) bring the user directly to the Start_next_stage page to input the visit date and cohort.
Mentioned by Meaghan for IBIS at the Loris meeting Nov.13, 2017

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[christinerogers]

apparently this is still in the roadmap - leaving open