UI: Support List Templates & Delete a Template

Addressed comments to last patch.

Signed-off-by: Hongliang Wang <hlwanghl@cn.ibm.com>
Signed-off-by: Meina Zhou <zhmeina@cn.ibm.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
ui: template creation without iso scan support

Support Create a Template feature in UI.

Signed-off-by: Hongliang Wang <hlwanghl@cn.ibm.com>
Signed-off-by: Xin Ding <xinding@cn.ibm.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
UI: Support Edit a Template

Support Edit Template feature in UI. This patch depends on UI: List
Templates & Delete a Template, and UI: Template Creation without iso
scan support. Please apply them first.

Signed-off-by: HongLiang Wang <hlwanghl@cn.ibm.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>