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

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

#1094712 by dereine: Replace locale_language_list with views version of the function to not rely on the locale modul

#1261468 by dereine: Fix notices when relationship label is not defined and strict error on views_handler_field_accesslog_path

#1244876 by dereine: Let views_handler_argument_vocabulary_vid utilize the features of views_handler_argument_numeric

#1207680 by damz: Don't validate if there are no options set, the values are empty and required is not set

#1207680 by dereine: Don't validate on term filters, because this causes views to not to save anymore