Wt

Wt needs to support a way to allow notifications to be made clear to the users.

Here we should allow for the browser tab to be updated such that:

• the favicon can be updated. This can be a replacement of the icon itself or an update to the icon by overlaying a small dot as a means to indicate the update.
• a way ought to be provided to reset this to the previous value
• the method that adapts the favicon ought to be virtual, so that developers can supply their own indication

Note: Wt will not actually perform the push update, that will still be up to developers to initiate.