Document which commands work (or don't work) with views

Commands that take a namespace or collection as an argument should document whether or not they work on views. A partial list is found in the original description below. We should also consider whether or not to create a "commands that work with views" list, if it would be helpful to users.

Engineering Ticket Description:

Commands that work with namespaces should either work with views, be a no-op, or fail explicitly with the error code CommandNotSupportedOnView. A non-exhaustive list includes

• createIndexes
• dropIndexes
• listIndexes
• reIndex
• renameCollection (with a shell helper renameView)
• collMod
• copydb
• validate