Support programmatic tool titles
Support programmatic tool titles

Just override OO.ui.Tool.prototype.getTitle. The default implementation
uses the same static property as before.

Change-Id: I80fd95142cafac0e136cfe3031c16c371625b469

wikimedia/oojs-ui,wikimedia/oojs-ui,wikimedia/oojs-ui,wikimedia/oojs-ui