#1251052 by dereine: Add automatic conversions of joins to relationships for users_roles and role. Additional clean up comment/node author relationship

#1270982 by drunken monkey, dereine: Allow to specify entity type on non-base-tables, which allows some fancy views integrations like a generic entity views integration

#1272350 by tunic: Fix content translation filter function, which still used the old add_where instead of add_where_expression

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

Currently the comment row assumes somehow that there are
only comments displayed from one node, so it uses just a single node_load per row.
Changed this to load all used nodes in the pre_render so it saves all this heavy loading.

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

#1230306 by aaron.r.carlton, dereine: User and taxonomy default plugin updated to new behaviour of views_get_page_view