webadmin: VM's template information is inconsistent after upgrading to 3.4

Having a thin provisioned VM created in 3.3 and updated it to 3.5 the VM
General subtab showed:
"TemplateName"
But if created in 3.4 and later it showed:
"TemplateName (Thin/Dependent)"

This patch unifies it so also the older VMs show up in the new format.

Change-Id: Ie55359039cf45a758f132e8c797f033f73222457
Bug-Url: https://bugzilla.redhat.com/show_bug.cgi?id=1084940
Signed-off-by: Tomas Jelinek <tjelinek@redhat.com>