I need a module to limit all products to 2 units of each for all products for all customers on purchase, this module do the job?

yes it does,

you can do it with module on its main configuration page where you can set quantity limit for all products (you will not have to do it individually for each product)

How to move the buttons (add to cart and buy now) from the bottom part of the product page to the top level of the product page  under the product name?

what version of prestashop and what theme ?

There are two possibilities. One free, one paid.

first one - free geolocation module for prestashop

it has feature to decide what currencies will be available in front of your shop for visitors from selected country

this means that you can just disable dollar in your front office and set NOK as default currency for front office :-)

second one is paid geolocation module for prestashop

module gives possibility to define as many geolocation conditions as you want, so you can control availability of currencies and languages for all visitors from all available countries (not only one as free version).

anyway, both modules gives you possibility to achieve what you expect but with "pro" version you've got more possibilities of personalization :-)

as i suppose pretty url module requires customization to support {reference} field. its because module does not support it by default.