On some Iphones the modal wouldn't fit and there were line breaks
between the input fields. The inputs are now stacked vertically on small
screens so that there is still plenty of space for large numbers in the
quantity fields.
When the user entered a number beyond the stock level, the browser was
correcting that to the max number which is very helpful. But Angular was
setting the model to undefined which removes the item from the cart.
Deactivating Angular's max behaviour let's us set the value ourselves
which is then used in the cart.
The fullwidth plus and minus signs are well understood in all countries
(that participate in the development of OFN). It's more likely that a
translator enters a normal plus or minus than that they want to change
the symbol. A normal + or - sign doesn't fill a whole character space
and is therefore not well aligned in the design.
