Damyon Wiese 26c4d2bf79 MDL-59628 forms: Get a valid zindex for datepicker
We have a way to determine a valid zindex when adding things to a page. Find all the moodle-has-zindex things and
choose a value bigger all of them. This needs doing in javascript whenever a thing is opened. It's not possible to
fix generically in CSS (remember the historic z-index wars).
2017-08-29 12:09:59 +08:00
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