frontend: Remove deprecated Editors

Removed usages of deprecated EntityModelCheckBoxOnlyEditor,
EntityModelPasswordBoxEditor, EntityModelTextAreaLabelEditor and
repaced with generic equivalents.

Also generified related Models.
- ConfirmationModel
- LoginModel
- UserPortalLoginModel
- EventNotificationModel

Storage:
- ClusterGlusterHookListModel
- GlusterHookContentModel
- GlusterHookResolveConflictsModel
- BrickAdvancedDetailsModel
- BrickPropertiesModel
- StorageModel
- MemoryStatisticsModel
- NfsStorageModel

Infra:
- HostModel
- InstallModel
- MultipleHostsModel

Virt:
- AbstractDiskModel
- DiskModel
- NewDiskModel
- SnapshotModel

Network:
- ProviderModel
- HostNetworkProviderModel
- NeutronAgentModel

Change-Id: I0640e68540e34fb1e020c6fcd59b5438d52dfdd9
Signed-off-by: Martin Betak <mbetak@redhat.com>