Fixed an issue with images in emails

app/views/user_mailer/conference_registration_confirmed_email.html.haml

@@ -1,4 +1,4 @@
-%img{src: "#{@url}/#{@conference.poster.full.url}", style: "max-width: 100%;"}
+%img{src: "#{@conference.poster.full.url}", style: "max-width: 100%;"}
 %div{style: 'padding: 25px'}
 	%h1=_'register.email.registration_confirmed.thank_you',"Hi #{@data[:user][:username]}, thank you for completing your registration. We'll see you at Bike!Bike!"
 	%h2=_'register.email.registration_confirmed.please_pay',"If you have not already done so, we ask that you pay the registration donation as soon as you can. At your convenience please visit the link below."

app/views/user_mailer/conference_registration_email.html.haml

@@ -1,4 +1,4 @@
-%img{src: "#{@url}/#{@conference.poster.full.url}", style: "max-width: 100%;"}
+%img{src: "#{@conference.poster.full.url}", style: "max-width: 100%;"}
 %div{style: 'padding: 25px'}
 	%h1=_'register.email.registration.please_confirm',"Hi #{@data[:user][:username]}, please confirm your registration for #{@conference.title}", vars: {:username => @data[:user][:username]}
 	%div{style: 'text-align:center'}