it's redundant due to ibuf_borrow_str()

- don't stop after parsing the header maybe there's some page data in the buffer, let's try to forward it immediately too. - use a local buffer plus bufferevent_read()

adapted from gmid. we'll soon use it to provide client certificates support in telescope.

gemini is handled when the 2x reply is received. Gopher and Finger lack an equivalent, so call history_add() for them at EOF.

Currently it is still fine to access ministate after exit_minibuffer(). In the future, if we ever support recursive minibuffers it won't. So, defer the exit_minibuffer() call and use minibuffer_compl_text() instead of peeking into ministate. While here, also add the "Bookmarked" message when it successfully bookmarked the page.

it returns -1/0 not 0/1