atreides/admin_home/index view has broken syntax

[benmanns]

Due to a new version of Haml, Ruby, or something else altogether, the if statement assigning periods in atreides/admin_home/index is causing syntax errors.

I fixed this by using

periods << [date.strftime(if date.year == this_year then "%B" else "Last %B" end), date.to_s]