* Update helpcontent2 from branch 'master'
  - Review date and time functions help pages
    
    fix some formatting issues
    Add note and warning on date parsing
    Mute l10n in some tables with constants
    
    Change-Id: I86b4e7651ac89e2d2c8e2e658a8bdfd8f185ab60
    Reviewed-on: https://gerrit.libreoffice.org/59582
    Tested-by: Jenkins
Reviewed-by: Adolfo Jayme Barrientos <fitojb@ubuntu.com>