views.upload: add takeoff/.../landing time fields to form
upload/details.jinja: add datetimepicker to time input fields

Store the 'real' value (including the date) in a hidden field while
displaying a time-only input field.
upload.js: add method for changeing timepicker values
upload/details.jinja: update timepicker values on plotselecting event
baro.js: add updateFlightTime method
upload/details.jinja: bind timepicker changes to barogram
lib.datetime: add to_seconds_of_day method
upload.js: show actual detected times in barogram
bundles: use datetimepicker fork with some performance tweaks

Unless it got merged into the official repo...
bundles: use moment.js without language specifics
*.js: make gjslinter happy
frontend.views.upload: uploaded flights are private by default

Force users to confirm their upload prior to publishing the uploaded flights.
templates/upload/*: show status label in tab bar
templates/upload/result: show vertical tabs only if more than one flight was uploaded
frontend.views.upload: trigger delayed analysis after publishing