Breakout (most) user stuff to separate module

The model remains in RIGS for now, as it's pretty painful to move...

users/forms.py

@@ -0,0 +1,57 @@
+import simplejson
+from captcha.fields import ReCaptchaField
+from django import forms
+from django.conf import settings
+from django.contrib.auth.forms import (AuthenticationForm, PasswordResetForm,
+                                       UserChangeForm, UserCreationForm)
+from django.core import serializers
+from django.core.mail import EmailMessage, EmailMultiAlternatives
+from django.utils import formats
+from registration.forms import RegistrationFormUniqueEmail
+from RIGS import models
+
+
+# Registration
+class ProfileRegistrationFormUniqueEmail(RegistrationFormUniqueEmail):
+    captcha = ReCaptchaField()
+
+    class Meta:
+        model = models.Profile
+        fields = ('username', 'email', 'first_name', 'last_name', 'initials')
+
+    def clean_initials(self):
+        """
+        Validate that the supplied initials are unique.
+        """
+        if models.Profile.objects.filter(initials__iexact=self.cleaned_data['initials']):
+            raise forms.ValidationError("These initials are already in use. Please supply different initials.")
+        return self.cleaned_data['initials']
+
+
+class CheckApprovedForm(AuthenticationForm):
+    def confirm_login_allowed(self, user):
+        if user.is_approved or user.is_superuser:
+            return AuthenticationForm.confirm_login_allowed(self, user)
+        else:
+            raise forms.ValidationError("Your account hasn't been approved by an administrator yet. Please check back in a few minutes!")
+
+
+# Embedded Login form - remove the autofocus
+class EmbeddedAuthenticationForm(CheckApprovedForm):
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, **kwargs)
+        self.fields['username'].widget.attrs.pop('autofocus', None)
+
+
+class PasswordReset(PasswordResetForm):
+    captcha = ReCaptchaField(label='Captcha')
+
+
+class ProfileCreationForm(UserCreationForm):
+    class Meta(UserCreationForm.Meta):
+        model = models.Profile
+
+
+class ProfileChangeForm(UserChangeForm):
+    class Meta(UserChangeForm.Meta):
+        model = models.Profile