Added loading of jq.price_format to tests
Fixed unmasking of currency field

Priceformat.unmask interferes with jquery masked input's unmask method.
This means jquery priceformat needs to be loaded BEFORE jquery masked
input for everything to work properly...
Added currency field rounding
Merge branch 'master' into currency-field-rounding

Conflicts:
	js/fields/advanced/CurrencyField.js
Added some more to the description of the round option
Added not about plugin loading order to currency field docs
Merge pull request #127 from yaworsw/currency-field-rounding

Currency field rounding