[wp-trac] [WordPress Trac] #46980: Remove title attributes from all the abbreviations

[WordPress Trac]

#46980: Remove title attributes from all the abbreviations
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 Reporter:  afercia                              |       Owner:  audrasjb
     Type:  defect (bug)                         |      Status:  reopened
 Priority:  normal                               |   Milestone:  5.3
Component:  Administration                       |     Version:
 Severity:  normal                               |  Resolution:
 Keywords:  title-attribute has-screenshots      |     Focuses:
  needs-patch                                    |  accessibility
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Comment (by afercia):

 [attachment:"46980.2.diff"]:

 - `readme.html`: improves abbreviations and removes unnecessary `title`
 attributes
 - options-general: removes unnecessary `UTC` abbreviations and improves
 the remaining ones
 - customizer schedule changeset date: removes unnecessary `UTC`
 abbreviations and improves the remaining ones
 - posts table date: uses a `span` element instead of an `abbr` element
 because this is not an abbreviation

 See screenshots below.

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Ticket URL: <https://core.trac.wordpress.org/ticket/46980#comment:16>
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