Toggling on/off confidentiality and locking of issues/mr

When you turn on/ff confidentially or locking of an issue or mr, you click the button and have to wait for the page to reload. It doesn't appear that anything is happening. We should add our spinner icon to the button while the page reloads to indicate the action is being performed.

Design

The spinner will show up after users click the button.

Confidentiality	Lock issue

Note: Confidentiality on issues has been completed