Add USPS Shipping Driver with tests, and i18n.

Change the Ship, Cart to do exception handling when calling a shipping driver,
as that's the message passing interface between the modules.
Add a noFormProcess field property that is recognized by processPropertiesFromFormPost.

lib/WebGUI/i18n/English/ShipDriver_USPS.pm

@@ -0,0 +1,93 @@
+package WebGUI::i18n::English::ShipDriver_USPS;
+
+use strict;
+
+our $I18N = {
+
+    'userid' => {
+        message => q|USPS Web Tools Username|,
+        lastUpdated => 1203569535,
+        context => q|Label in the ShipDriver edit form.|,
+    },
+
+    'userid help' => {
+        message => q|You can get a Web Tools Username by first registering with the USPS.|,
+        lastUpdated => 1203569511,
+    },
+
+    'password' => {
+        message => q|USPS Web Tools Password (optional)|,
+        lastUpdated => 1203569535,
+        context => q|Label in the ShipDriver edit form.|,
+    },
+
+    'password help' => {
+        message => q|You will recieve a password along with your username when you register.|,
+        lastUpdated => 1203569511,
+    },
+
+    'instructions' => {
+        message => q|Registration Instructions|,
+        lastUpdated => 1203569535,
+        context => q|Label in the ShipDriver edit form.|,
+    },
+
+    'usps instructions' => {
+        lastUpdated => 1241028258,
+        message => q|<p>In order to use the USPS Shipping Driver, you must first register with the United States Postal Service as a <a href="https://secure.shippingapis.com/registration/">USPS Web Tools User</a>.  Fill out the form, submit it, and within a few days the USPS will send you a username and password to use this service.  Enter your username and password in the form fields below.</p><p>This driver supports three kinds of shipping with one preset size for each kind.  Package sizes, and shipping services outside of those choices, are currently not supported.</p><p>For the purpose of calculating weight, the weight property of a Product is considered to be in pounds.|,
+    },
+
+    'ship type' => {
+        message => q|Shipping type|,
+        lastUpdated => 1203569535,
+        context => q|Label in the ShipDriver edit form.|,
+    },
+
+    'ship type help' => {
+        message => q|Select one from the list of options.  If you wish to provide multiple types of shipping, create one additional shipping driver instance for each option.|,
+        lastUpdated => 1203569511,
+    },
+
+    'source zipcode' => {
+        message => q|Shipping Zipcode|,
+        lastUpdated => 1203569535,
+        context => q|Label in the ShipDriver edit form.|,
+    },
+
+    'source zipcode help' => {
+        message => q|The zipcode of the location you will be shipping from.|,
+        lastUpdated => 1203569511,
+    },
+
+    'flatFee' => {
+        message => q|Flat Fee|,
+        lastUpdated => 1241214572,
+        context => q|A fixed amount of money added to a purchase for shipping.|,
+    },
+
+    'flatFee help' => {
+        message => q|A fixed amount of money added to a purchase for shipping, covering shipping materials and handling.|,
+        lastUpdated => 1241214575,
+    },
+
+    'priority' => {
+        message => q|Priority, Flat Rate Box|,
+        lastUpdated => 1203569511,
+        context => q|Label for a type of shipping from the USPS.|,
+    },
+
+    'express' => {
+        message => q|Express, Regular size|,
+        lastUpdated => 1203569511,
+        context => q|Label for a type of shipping from the USPS.|,
+    },
+
+    'parcel post' => {
+        message => q|Parcel Post, Regular size|,
+        lastUpdated => 1242166045,
+        context => q|Label for a type of shipping from the USPS.|,
+    },
+
+};
+
+1;