Sidebar Titles - how to omit

In a previous version of atahulapa (2.21) I was able to "erase" the titles above the list of pages and links by setting the sidebar title size to 0. That option is no longer shown, now that I've gone to 3.4.5.1. For example, how can I get rid of "Blogroll" above the links? and the word "Pages" above the static pages? I can change "Pages" to something else, but can't get rid of it entirely by deleting it from the widget, even by leaving it blank. Also, is there a way to sort the links as you can the pages?

Thanks.