[ticket/12580] Remove :link pseudo from a tag

removed the :link pseudo from a tag as due to specificity it prevents
classes from altering any properties set to it.

PHPBB3-12580
[ticket/12600] Add @log to the dependencies of extension:show

PHPBB3-12600
Merge remote-tracking branch 'hanakin/ticket/12580' into develop-ascraeus

* hanakin/ticket/12580:
  [ticket/12580] Remove :link pseudo from a tag
Merge pull request #2500 from Nicofuma/ticket/12600

[ticket/12600] Add @log to the dependencies of extension:show

* Nicofuma/ticket/12600:
  [ticket/12600] Add @log to the dependencies of extension:show