#1301366 by dereine: Add a node_comment_statistics::last_comment_uid field, filter, argument and relationship

#1330716 by dereine: Take sure that using a view via views_get_current_view doesn't break the site. If it's empty throw some helpful debugging message

#1331032 by dereine: Hide rewriting if the value of a field is actually empty by default. That's maybe causes some views but sure we are doomed anyway. Additional fix it let the custom block actually always display something

Conflicts:

	includes/view.inc

#1316932 by dereine: Reorder view execution and title generation, so the title can use the tokens from actual result values.

#1307162 by cmurph: Check whether an argument is empty or not when loading the taxonomy term for the title

#1314306 by Hanno: Don't translate html-tags, because translators might get confused and the user should really see the original tag all the time.

#1090098 by dereine, chx: Convert database views which were defaulted in d6.2 and exported to views3. Sadly this only works for exported