First version of new filters.
Adds locale support to price filters.
Adds setting LFS_PAYPAL_HTTPS.
Fixes price filtering; fixes calculation of effective_price; adds 'Update effective price' to management utils.
Adds locale support for number fields; several bug fixes for filters in general.
Adds larger property fields.
Creates PropertyValues for variants if they are not exist.
Fixes all tests.

Conflicts:
	lfs/catalog/tests.py
	lfs/catalog/views.py
Makes all tests pass.