Add templatetag for process bars

aleksis/apps/paweljong/templatetags/coerce.py

+from django import template
+
+register = template.Library()
+
+
+@register.filter
+def coerce_max(value, arg):
+    return arg if value > arg else value
+
+
+@register.filter
+def coerce_min(value, arg):
+    return arg if value < arg else value