Add text in the integrations list for when no integrations are installed.
Review Request #8348 — Created Aug. 25, 2016 and submitted
The integrations list appeared awfully blank when there weren't any integrations installed, almost looking like an error. We now show some default text stating that integrations aren't installed. This is stored in a template block, allowing consumers to override the content and show more useful information.
Tested with and without integrations installed. Saw the new text when
they weren't installed, instead of showing nothing but the box's title
element.