views 6.x-2.15

IMPORTANT: 2.15 is 2.13 just with a fix for replacement-patterns. This might have affected you if you use flag, for example. So no new features since 2.11 is in this version. If you want new features or currently use 2.14, please use 6.x-2.16

Changes since 6.x-2.13:

• #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
• #1330716 by markus_petrux, dereine: Views substitutions broken after db_safe() update