Updated Allegro url on Powered By page.
Updated Allegro url on Powered By page.

Review: https://reviews.apache.org/r/56740/

chhsia0/mesos,gsantovena/mesos,andschwa/mesos,craimbert/mesos,yuquanshan/customizedMesos,jpeach/mesos,yuquanshan/customizedMesos,Aman-Jain-14/customizedMesos,gsantovena/mesos,yuquanshan/customizedMesos,asamerh4/mesos,reneploetz/mesos,gsantovena/mesos,zmalik/mesos,dforsyth/mesos,kaysoky/mesos,andschwa/mesos,Gilbert88/mesos,gsantovena/mesos,craimbert/mesos,abudnik/mesos,yuquanshan/customizedMesos,kaysoky/mesos,Aman-Jain-14/customizedMesos,neilconway/mesos,craimbert/mesos,gsantovena/mesos,craimbert/mesos,andschwa/mesos,craimbert/mesos,Gilbert88/mesos,gsantovena/mesos,dforsyth/mesos,andschwa/mesos,Aman-Jain-14/customizedMesos,gsantovena/mesos,zmalik/mesos,abudnik/mesos,abudnik/mesos,verizonlabs/mesos,zmalik/mesos,jpeach/mesos,verizonlabs/mesos,asamerh4/mesos,Gilbert88/mesos,Aman-Jain-14/customizedMesos,Gilbert88/mesos,yuquanshan/customizedMesos,neilconway/mesos,asamerh4/mesos,jpeach/mesos,kaysoky/mesos,chhsia0/mesos,chhsia0/mesos,neilconway/mesos,andschwa/mesos,verizonlabs/mesos,jpeach/mesos,verizonlabs/mesos,reneploetz/mesos,yuquanshan/customizedMesos,Aman-Jain-14/customizedMesos,kaysoky/mesos,Gilbert88/mesos,kaysoky/mesos,jpeach/mesos,verizonlabs/mesos,Aman-Jain-14/customizedMesos,verizonlabs/mesos,zmalik/mesos,abudnik/mesos,reneploetz/mesos,jpeach/mesos,neilconway/mesos,andschwa/mesos,asamerh4/mesos,dforsyth/mesos,yuquanshan/customizedMesos,zmalik/mesos,dforsyth/mesos,reneploetz/mesos,chhsia0/mesos,andschwa/mesos,neilconway/mesos,Gilbert88/mesos,neilconway/mesos,abudnik/mesos,neilconway/mesos,zmalik/mesos,craimbert/mesos,Aman-Jain-14/customizedMesos,chhsia0/mesos,craimbert/mesos,dforsyth/mesos,kaysoky/mesos,reneploetz/mesos,asamerh4/mesos,asamerh4/mesos,asamerh4/mesos,abudnik/mesos,kaysoky/mesos,chhsia0/mesos,dforsyth/mesos,dforsyth/mesos,reneploetz/mesos,abudnik/mesos,zmalik/mesos,chhsia0/mesos,jpeach/mesos,verizonlabs/mesos,Gilbert88/mesos,reneploetz/mesos