Update Stripe's jquery.payment, and change KO field binding type

This uses `textInput` for better handling of text field operations like pasting and
autofill. This should allow for card numbers to be pasted in on payment forms.

bower.json

@@ -19,7 +19,7 @@
     "readthedocs-client": "https://github.com/agjohnson/readthedocs-client-js.git",
     "sphinx-rtd-theme": "https://github.com/snide/sphinx-rtd-theme.git#0.1.9",
     "knockout": "~3.3.0",
-    "jquery.payment": "~1.2.3",
+    "jquery.payment": "~1.3.0",
     "jquery-migrate": "~1.2.1",
     "jquery-ui": "1.8.23"
   },

readthedocs/payments/forms.py

@@ -82,7 +82,7 @@ class StripeModelForm(forms.ModelForm):
         label=_('Card number'),
         widget=forms.TextInput(attrs={
             'data-bind': ('valueInit: cc_number, '
-                          'value: cc_number, '
+                          'textInput: cc_number, '
                           '''css: {'field-error': error_cc_number() != null}''')
         }),
         max_length=25,
@@ -91,7 +91,7 @@ class StripeModelForm(forms.ModelForm):
         label=_('Card expiration'),
         widget=forms.TextInput(attrs={
             'data-bind': ('valueInit: cc_expiry, '
-                          'value: cc_expiry, '
+                          'textInput: cc_expiry, '
                           '''css: {'field-error': error_cc_expiry() != null}''')
         }),
         max_length=10,
@@ -100,7 +100,7 @@ class StripeModelForm(forms.ModelForm):
         label=_('Card CVV'),
         widget=forms.TextInput(attrs={
             'data-bind': ('valueInit: cc_cvv, '
-                          'value: cc_cvv, '
+                          'textInput: cc_cvv, '
                           '''css: {'field-error': error_cc_cvv() != null}'''),
             'autocomplete': 'off',
         }),