Improve tooltip of scheduled emails

[kuzmany]

Please be sure you are submitting this against the staging branch.

Q	A
Bug fix?
New feature?
Automated tests included?
Related user documentation PR URL
Related developer documentation PR URL
Issues addressed (#s or URLs)
BC breaks?
Deprecations?

Description:

Just small improvement to tooltip scheduled emails. Added date start sending at and stop sending at

Steps to test this PR:

1. Load up this PR
2. Create email with Publish at (date/time) in future and go to email lists and check tooltip
3. Create email with Unpublish at (date/time) in past and go to email list and related check tooltip

List deprecations along with the new alternative:

List backwards compatibility breaks:

[TravisBuddy]

Hey @kuzmany,
Something went wrong with the build.

TravisCI finished with status errored, which means the build failed because of something unrelated to the tests, such as a problem with a dependency or the build process itself.

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TravisBuddy Request Identifier: 279d08f0-87d8-11ea-9c26-c9c9fa839a9b

[StrategieSociali]

Is just my first test and I hope everything I have done is correct. With "Published on the future" all seem ok, I can see the clock and the correct description. The past doesn't work. Whether I program in the past with published or unpublished, whether I program in the future and wait for the programming time to pass, I get the same result: the email goes in "not published"

[RCheesley]

Thanks for the nice PR @kuzmany - a small but helpful improvement to the UX.

Confirm that the tooltip is applied with the PR as I would expect:

[RCheesley]

@StrategieSociali thanks for testing! To get these conditions you need to create two emails. In one of them set the publish at date/time in the future. This will be in the 'pending' status.

In the second email (I just cloned the one above in my case!) remove the publish at date, and set the unpublish at date/time to something in the past. This will be in the 'expired' status.

Hope that makes sense - the test instructions could have been clearer!

[dennisameling]

LGTM 👍

[codecov]

Codecov Report

Merging #8733 into staging will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             staging    #8733   +/-   ##
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  Coverage      29.88%   29.88%           
  Complexity     33258    33258           
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  Files           1937     1937           
  Lines         115196   115196           
==========================================
  Hits           34428    34428           
  Misses         80768    80768