Refactor category_plot tag to remove budget parameter

Fix #45

nummi/category/templatetags/category.py

@@ -6,10 +6,10 @@ register = template.Library()
 
 
 @register.inclusion_tag("category/category_plot.html", takes_context=True)
-def category_plot(context, transactions, budget=True, **kwargs):
+def category_plot(context, transactions, **kwargs):
     kwargs.setdefault("account", context.get("account"))
 
-    if budget:
+    if not kwargs.get("account"):
         transactions = transactions.exclude(category__budget=False)
     categories = (
         transactions.values("category", "category__name", "category__icon")

nummi/statement/templates/statement/statement_detail.html

@@ -65,6 +65,6 @@
   </section>
   <section>
     <h3>{% translate "Categories" %}</h3>
-    {% category_plot transactions budget=False statement=object %}
+    {% category_plot transactions statement=object %}
   </section>
 {% endblock body %}