Revert "wheezy: fix is_safe attribute of template filters"

This reverts commit 730fb3b0a0607bba95b90db1c6154cb7febb9187. This
commit is reverted because it breaks compatibility with Django 1.2. This
should be applied for Synnefo 0.15.

snf-cyclades-app/synnefo/helpdesk/templatetags/helpdesk_tags.py

@@ -2,7 +2,6 @@ from django import template
 
 register = template.Library()
 
-
 @register.filter(name="vm_public_ip")
 def vm_public_ip(vm):
     """
@@ -24,9 +23,7 @@ VM_STATE_CSS_MAP = {
         'ACTIVE': 'success',
         'DESTROYED': 'inverse'
 }
-
-
-@register.filter(name="object_status_badge", is_safe=True)
+@register.filter(name="object_status_badge")
 def object_status_badge(vm_or_net):
     """
     Return a span badge styled based on the vm current status
@@ -41,8 +38,9 @@ def object_status_badge(vm_or_net):
         deleted_badge = '<span class="badge badge-important">Deleted</span>'
     return '%s\n<span class="%s">%s</span>' % (deleted_badge, badge_cls, state)
 
+object_status_badge.is_safe = True
 
-@register.filter(name="network_deleted_badge", is_safe=True)
+@register.filter(name="network_deleted_badge")
 def network_deleted_badge(network):
     """
     Return a span badge styled based on the vm current status
@@ -52,16 +50,18 @@ def network_deleted_badge(network):
         deleted_badge = '<span class="badge badge-important">Deleted</span>'
     return deleted_badge
 
+network_deleted_badge.is_safe = True
 
-@register.filter(name="get_os", is_safe=True)
+@register.filter(name="get_os")
 def get_os(vm):
     try:
         return vm.metadata.filter(meta_key="OS").get().meta_value
     except:
         return "unknown"
 
+get_os.is_safe = True
 
-@register.filter(name="network_vms", is_safe=True)
+@register.filter(name="network_vms")
 def network_vms(network, account, show_deleted=False):
     vms = []
     nics = network.nics.filter(machine__userid=account)
@@ -71,6 +71,7 @@ def network_vms(network, account, show_deleted=False):
         vms.append(nic.machine)
     return vms
 
+network_vms.is_safe = True
 
 @register.filter(name="network_nics")
 def network_nics(network, account, show_deleted=False):
@@ -80,8 +81,7 @@ def network_nics(network, account, show_deleted=False):
         nics = nics.filter(machine__deleted=False).distinct()
     return nics
 
-
-@register.filter(name="backend_info", is_safe=True)
+@register.filter(name="backend_info")
 def backend_info(vm):
     content = ""
     backend = vm.backend
@@ -96,3 +96,5 @@ def backend_info(vm):
         content += '<dt>Backend ' + field.name + '</dt><dd>' + \
                    str(getattr(backend, field.name)) + '</dd>'
     return content
+
+backend_info.is_safe = True