Handle the case where the current locale isn't in site list
Handle the case where the current locale isn't in site list

We only really want to redirect people to live sites, so pre-launch
sites don't belong in WorldFOIWebsites. Handle the case where the
current locale isn't there. Closes #1345.

codeforcroatia/alaveteli,TEDICpy/QueremoSaber,TEDICpy/QueremoSaber,andreicristianpetcu/alaveteli_old,4bic/alaveteli,Br3nda/alaveteli,andreicristianpetcu/alaveteli_old,nzherald/alaveteli,petterreinholdtsen/alaveteli,TEDICpy/QueremoSaber,andreicristianpetcu/alaveteli,Br3nda/alaveteli,datauy/alaveteli,nzherald/alaveteli,Br3nda/alaveteli,andreicristianpetcu/alaveteli,4bic/alaveteli,nzherald/alaveteli,Br3nda/alaveteli,andreicristianpetcu/alaveteli_old,codeforcroatia/alaveteli,4bic/alaveteli,andreicristianpetcu/alaveteli_old,codeforcroatia/alaveteli,datauy/alaveteli,TEDICpy/QueremoSaber,andreicristianpetcu/alaveteli,petterreinholdtsen/alaveteli,TEDICpy/QueremoSaber,andreicristianpetcu/alaveteli,petterreinholdtsen/alaveteli,petterreinholdtsen/alaveteli,datauy/alaveteli,andreicristianpetcu/alaveteli_old,4bic/alaveteli,codeforcroatia/alaveteli,nzherald/alaveteli,Br3nda/alaveteli,andreicristianpetcu/alaveteli,petterreinholdtsen/alaveteli,4bic/alaveteli,nzherald/alaveteli