[fix bug 979217] Make Australis tour available at a secondary URL for link in the Help menu
Bug 969776 - Gigabit Site - Wrong preview image on Facebook
Merge pull request #1749 from alexgibson/bug-979217-make-australis-tour-available-at-secondary-url-for-link-in-help-menu

[fix bug 979217] Make Australis tour available at a secondary URL for link in the Help menu
Merge pull request #1745 from retornam/bug-9669776-gigabit-site

Bug 969776 - Gigabit Site - Wrong preview image on Facebook
Bug 952429: Fix some urls for the new calendar holidays page.

Also change the redirects for bug 971244 to 301s.
Merge pull request #1756 from pmclanahan/add-apache-rule-holidays-952429

Bug 952429: Fix some urls for the new calendar holidays page.