add annual.wikimedia.org

request in T599

RFC: What is a good name for the annual reports site?

PS4: changed from reports.wikimedia.org to
     reports.wikimediafoundation.org

PS6: changed to 'annual' and in wikimedia.org again
     (per suggestion by Eloquence)

Change-Id: Ib34b78b22ebe1aa49a8325fe02bb1f047868b41b
Merge "add annual.wikimedia.org"