Bug #707392 - Only very first Collapse/Expand button in message header pane works

When we were collecting the elements for adding the onclick event
listeners, we were using the webkit_dom_document_get_element_by_id
method, but when email had multiple TO, CC or BCC headers it was
returning just the first elements with given id. To fix this we moved
to webkit_dom_*_query_selector methods that give us more powerfull
element extraction from document.

When toggling the visibility of header row, we are now operating just
in the row that contains the clicked element.

This patch also remove the suffixes from all  __evo-moreaddr ids.