Use select2 instead of regular selectbox for profile public email

app/views/profiles/show.html.haml

@@ -43,7 +43,7 @@
       .form-group
         = f.label :public_email, class: "control-label"
         .col-sm-10
-          = f.select :public_email, options_for_select(@user.all_emails, selected: @user.public_email), {include_blank: 'Do not show in profile'}, class: "form-control"
+          = f.select :public_email, options_for_select(@user.all_emails, selected: @user.public_email), {include_blank: 'Do not show on profile'}, class: "select2"
           %span.help-block This email will be displayed on your public profile.
       .form-group
         = f.label :skype, class: "control-label"