Massive overhaul of "generate project" feature

previous incarnation was woefully lacking.  new feature is much more
extensible.  still need to remove old POS integration specifics in
some places.

and a couple of unrelated things that snuck in..

- deprecate `rattail.util.OrderedDict`
- deprecate `rattail.util.import_module_path()`
- deprecate `rattail.util.import_reload()`

tailbone/views/batch/handheld.py

@@ -2,7 +2,7 @@
 ################################################################################
 #
 #  Rattail -- Retail Software Framework
-#  Copyright © 2010-2022 Lance Edgar
+#  Copyright © 2010-2023 Lance Edgar
 #
 #  This file is part of Rattail.
 #
@@ -24,10 +24,9 @@
 Views for handheld batches
 """
 
-from __future__ import unicode_literals, absolute_import
+from collections import OrderedDict
 
 from rattail.db import model
-from rattail.util import OrderedDict
 
 import colander
 from webhelpers2.html import tags

tailbone/views/batch/inventory.py

@@ -27,12 +27,13 @@ Views for inventory batches
 import re
 import decimal
 import logging
+from collections import OrderedDict
 
 from rattail import pod
 from rattail.db import model
 from rattail.db.util import make_full_description
 from rattail.gpc import GPC
-from rattail.util import pretty_quantity, OrderedDict
+from rattail.util import pretty_quantity
 
 import colander
 from deform import widget as dfwidget

tailbone/views/batch/product.py

@@ -2,7 +2,7 @@
 ################################################################################
 #
 #  Rattail -- Retail Software Framework
-#  Copyright © 2010-2020 Lance Edgar
+#  Copyright © 2010-2023 Lance Edgar
 #
 #  This file is part of Rattail.
 #
@@ -24,10 +24,9 @@
 Views for generic product batches
 """
 
-from __future__ import unicode_literals, absolute_import
+from collections import OrderedDict
 
 from rattail.db import model
-from rattail.util import OrderedDict
 
 import colander
 from webhelpers2.html import HTML