Add classes to models

Create a new app, mercantile, which takes care of everything related to
money and calculations. Add classes and variables to the models of
both waffles and mercantile.

# Please enter the commit message for your changes. Lines starting
# with '#' will be ignored, and an empty message aborts the commit.
# On branch master
# Your branch is up-to-date with 'origin/master'.
#
# Changes to be committed:
#	new file:   mercantile/.models.py.swp
#	new file:   mercantile/__init__.py
#	new file:   mercantile/admin.py
#	new file:   mercantile/migrations/__init__.py
#	new file:   mercantile/models.py
#	new file:   mercantile/tests.py
#	new file:   mercantile/views.py
#	modified:   waffles/models.py
#
# Changes not staged for commit:
#	modified:   .gitignore
#

mercantile/admin.py

@@ -0,0 +1,3 @@
+from django.contrib import admin
+
+# Register your models here.

mercantile/models.py

@@ -0,0 +1,25 @@
+from django.db import models
+from waffles.models import Event, UserProfile
+# Create your models here.
+
+
+class Debt(models.Model):
+    amount = models.BigIntegerField()
+    debtor = models.ForeignKey(UserProfile)
+    debtee = models.ForeignKey(UserProfile)
+
+
+# oversikt over oppgjør, for logging
+class Calculation(models.Model):
+    debt = models.ForeignKey(Debt)
+    event = models.ForeignKey(Event)
+    date = models.DateTimeField()
+
+
+# Lagring av oppgjør
+class Settlement(models.Model):
+    debt = models.ForeignKey(Debt)
+    dato = models.DateField()
+    amount = models.IntegerField()
+
+

mercantile/tests.py

@@ -0,0 +1,3 @@
+from django.test import TestCase
+
+# Create your tests here.

mercantile/views.py

@@ -0,0 +1,3 @@
+from django.shortcuts import render
+
+# Create your views here.

waffles/models.py

@@ -14,6 +14,35 @@ class Community(models.Model):
     members = models.ManyToManyField(UserProfile)
 
 
+# Jeg har lyst til å vafle!
+# Er det noen som er med?
+class Listing(models.Model):
+    community = models.ForeignKey(Community)
+    timeFrom = models.DateTimeField()
+    timeTo = models.DateTimeField()
+    user = models.ForeignKey(UserProfile)
+    description = models.TextField()
+
+
 class Event(models.Model):
     name = models.CharField(max_length=64)
     description = models.TextField()
+    status = models.BooleanField() # closed - no more edits
+    participants = models.ManyToManyField(UserProfile)
+    timeFrom = models.DateTimeField()
+    timeTo = models.DateTimeField()
+
+
+class Subevent(models.Model):
+    name = models.CharField(max_length=64)
+    participants = models.ManyToManyField(UserProfile)
+    event = models.ForeignKey(Event)
+
+
+class ShoppingList(models.Model):
+    name = models.CharField(max_length=64)
+    price = models.IntField
+    payers = models.ManyToManyField(UserProfile)
+    subevent = models.ForeignKey(Subevent)
+
+