kcms/dateandtime: Add spacers on left & right, fix time server sizeHint

Joshua Goinsrequested to merge
work/redstrate/fix-dateandtime-height into master

And also increase the minimum size of the analog clock to a more sensible size. All of these small fixes help the various sizing and positioning issues with the KCM.

Before After
Screenshot_26_050654 Screenshot_26_050510

And just to show I didn't accidentally break the time server combo:

Screenshot_26_050535 (It's empty because I forced it on, not because of a bug.)

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