ui: various: encode values with htmlEncode

there are some fields/values that were not html encoding properly, do
that to prevent raw HTML reaching the DOM.

Signed-off-by: Dominik Csapak <d.csapak@proxmox.com>
Tested-by: Stoiko Ivanov <s.ivanov@proxmox.com>
Reviewed-by: Stoiko Ivanov <s.ivanov@proxmox.com>