Page Roles?

My site allows user’s to edit and create all pages but I want to take away the ability for private and password protected pages so people don’t hide pubilc pages from others.

Yet I also want the ability for the administrator to lock pages from editing while letting all others to view it.

I use user role editor for permissions.

Help with either of these issues i’m having would be greatly appreciated.

I was thinking I could just remove the strings that show private and password protect links on the sidebar and their original php script but I don’t know where these are located in the core files.

and to make a certain page un-editable maybe a button only the admin could see that outputs to the publish page. The button defining the page as only editable by the admin, or if anyone knows a way to make certain urls unavailable to those who aren’t a admin that can work until I can figure it out.

So any ideas would be great and if you need any information I’d be glad to give it too you.