Nosto Recommendations are loaded twice

[mridang]

On a category page and the cart page, we use the JS to auto-load the slots and re-position them. Since the call nostojs.init() has already fired, we move the slots to another position and and re-load the recommendations through the JS API, which causes the events to be fired again.

This can be solved by checking in the header if it is a search/category page. If it is wrap the nostojs.init ins a custom function which is invoked by the auto-slots code. On all other pages, the nostojs.init is fired automatically.

[mridang]

Noticed again.