>> What steps will reproduce the problem?
1. Customers -> New Invoice
2. Enter some services and scroll down so that "Calculate" button is visible
3. Press "Calculate" button and after refreshing the page, the page scrolls
to TOP of the page.
>> What is the expected output? What do you see instead?
The page should remain static (ie: in the same scroll position at which
button was clicked) so that the user does not have to scroll down every
time he choose new service and has to press "Calculate" button