Run CI/CD pipelines on a schedule Improving UI FE and UX

Resources

UX @dimitrieh FE @brycepj BE @zj

Issue Origin

Issue idea came from: https://gitlab.com/gitlab-org/gitlab-ce/issues/2989

This is basically the %9.2 iteration of CI/CD pipelines on a schedule

Design

Moves pipelines scheduling away from triggers in settings to its own subtab in Pipelines => Scheduling
Triggers in settings changes back to its old form (before it had schedules)
Variables support
Hides cron field when other radio option preset is selected
Current time zone detection (via location?) (if too hard leave it out, but its very nice and saves time)
Timezone format can be found here http://stackoverflow.com/questions/1727077/generating-a-drop-down-list-of-timezones-with-php
clicking Cron syntax will open up a new tab linking to the Wikipedia page https://en.wikipedia.org/wiki/Cron
take ownership must be in there (same as with triggers.. as it uses triggers in the background?) (They need to own it because pipelines trigged on the schedule need to run as somebody to inherit project authorizations for submodules, registry images, etc.)

Target search works like:

Illustration: illustration_scheduled_pipelines.svg

Jobs / pipeline list tags should but updated as well:

Api triggers: Triggered
Scheduled triggers: Scheduled

extra notes:

"last triggered" column should not be displayed
On the edit page at the bottom we should provide a active/nonactive checkbox like:

What do you mean exactly with GitLab cron? I don't think we need to re-event the wheel :) Can we link to an external link? We have a couple of "official" options:

@axil Sounds good to me! (Can you add the link you choose to the issue description?) also see https://gitlab.com/gitlab-org/gitlab-ce/issues/30882#note_28093611

updating issue description

Next iterations could include

search example image
A view where you can view all pipeline created by a specific schedulement
Conditions example image
Scheduling to run once (I think we can extend this design pretty easy for https://gitlab.com/gitlab-org/gitlab-ce/issues/30675 )
Search for both branches and tags for target example image
Multiple scheduled pipelines at the same time with one schedulement, with wild card targets example image

CC/Call to actions

@markpundsack (incoorporated your feedback from https://gitlab.com/gitlab-org/gitlab-ce/issues/2989#note_27070022 )
@ayufan @dosuken123 (this is the new issue, see how you like the design 😄 )
@hazelyang (what do you think about the illustration?)