Bug: Web Batch annotate of HCS

[saloynton]

Using the win2k8 server I have had a 500 internal server error message appear after clicking confirm for the batch annotation.

Traceback (most recent call last):
  File "/Users/ola/Dev/omero/dist/lib/python/django/core/servers/basehttp.py", line 279, in run
    self.result = application(self.environ, self.start_response)
  File "/Users/ola/Dev/omero/dist/lib/python/django/core/servers/basehttp.py", line 651, in __call__
    return self.application(environ, start_response)
  File "/Users/ola/Dev/omero/dist/lib/python/django/core/handlers/wsgi.py", line 241, in __call__
    response = self.get_response(request)
  File "/Users/ola/Dev/omero/dist/lib/python/django/core/handlers/base.py", line 134, in get_response
    return self.handle_uncaught_exception(request, resolver, exc_info)
  File "/Users/ola/Dev/omero/dist/lib/python/django/core/handlers/base.py", line 154, in handle_uncaught_exception
    return debug.technical_500_response(request, *exc_info)
  File "/Users/ola/Dev/omero/dist/lib/python/django/views/debug.py", line 40, in technical_500_response
    html = reporter.get_traceback_html()
  File "/Users/ola/Dev/omero/dist/lib/python/django/views/debug.py", line 114, in get_traceback_html
    return t.render(c)
  File "/Users/ola/Dev/omero/dist/lib/python/django/template/__init__.py", line 178, in render
    return self.nodelist.render(context)
  File "/Users/ola/Dev/omero/dist/lib/python/django/template/__init__.py", line 779, in render
    bits.append(self.render_node(node, context))
  File "/Users/ola/Dev/omero/dist/lib/python/django/template/debug.py", line 71, in render_node
    result = node.render(context)
  File "/Users/ola/Dev/omero/dist/lib/python/django/template/defaulttags.py", line 29, in render
    output = self.nodelist.render(context)
  File "/Users/ola/Dev/omero/dist/lib/python/django/template/__init__.py", line 779, in render
    bits.append(self.render_node(node, context))
  File "/Users/ola/Dev/omero/dist/lib/python/django/template/debug.py", line 71, in render_node
    result = node.render(context)
  File "/Users/ola/Dev/omero/dist/lib/python/django/template/defaulttags.py", line 155, in render
    nodelist.append(node.render(context))
  File "/Users/ola/Dev/omero/dist/lib/python/django/template/defaulttags.py", line 243, in render
    return self.nodelist_true.render(context)
  File "/Users/ola/Dev/omero/dist/lib/python/django/template/__init__.py", line 779, in render
    bits.append(self.render_node(node, context))
  File "/Users/ola/Dev/omero/dist/lib/python/django/template/debug.py", line 81, in render_node
    raise wrapped
TemplateSyntaxError: Caught an exception while rendering: _val

Original Traceback (most recent call last):
  File "/Users/ola/Dev/omero/dist/lib/python/django/template/debug.py", line 71, in render_node
    result = node.render(context)
  File "/Users/ola/Dev/omero/dist/lib/python/django/template/defaulttags.py", line 155, in render
    nodelist.append(node.render(context))
  File "/Users/ola/Dev/omero/dist/lib/python/django/template/debug.py", line 87, in render
    output = force_unicode(self.filter_expression.resolve(context))
  File "/Users/ola/Dev/omero/dist/lib/python/django/template/__init__.py", line 564, in resolve
    for lookup, arg in args:
  File "/Users/ola/Dev/omero/dist/lib/python/omero/rtypes.py", line 557, in __getattr__
    raise AttributeError(attr)
AttributeError: _val

[Aleksandra Tarkowska <atarkowska@…>]

(In [9fb25be6af24f7aaca2f762c43dbe285b1ca6eb9/ome.git] on branch develop) this fixes batch annotation error , close #6652