frontend: Clarify CPU labels in host and cluster views

This patch clarifies naming of labels and fields related to CPU.
In past there were two fields with cpu information:
 - name
 - type.
The naming of these fields didn't make any sense since "name" field
contained value with cpu family whereas "type" field contained actual
name of the cpu model. In order to avoid the confusion, this patch
renames the fields in this way:
 type -> model
 name -> type.

Change-Id: I5137dbb61dcc07dc7d5ccced390d94ddc1c9ba4e
Signed-off-by: Frantisek Kobzik <fkobzik@redhat.com>
Bug-Url: https://bugzilla.redhat.com/1056586