Disable popup tag btn until page exists
Disable popup tag btn until page exists

- tags can be altered when a page doesn't exist (try as soon as load a new page) but nothing will actually happen as there's nothing to save to
- this disables that button until a page is ready
- bookmark btn works with a complex hack around the visit scenario
- with the new visit process this should not matter (there will always be a stub page early on in the visit, which tags can be added to)

WorldBrain/WebMemex,WorldBrain/WebMemex