Adding a few template tags for use in templates that doesn't receive RequestContext, like 500.html

- Legacy-Id: 759

ietf/idtracker/templatetags/versiontags.py

@@ -0,0 +1,30 @@
+# Copyright The IETF Trust 2007, All Rights Reserved
+
+from django import template
+from ietf import __date__, __rev__, __version__, __id__
+from ietf.utils import log
+
+
+register = template.Library()
+
+
+@register.simple_tag
+def revision_time():
+    return __date__[7:32]
+
+@register.simple_tag
+def revision_date():
+    return __date__[34:-3]
+
+@register.simple_tag
+def revision_num():
+    return __rev__[6:-2]
+
+@register.simple_tag
+def revision_id():
+    return __id__[5:-2]
+
+@register.simple_tag
+def version_num():
+    return __version__
+