compute button no longer seems to work

[butler]

after closing #694 it seems that something along the way has broken that button completely - basically it no longer seems to do anything regardless of being theory or a fit page with data. Does seem that in 2D it may be working.

[ajj]

In 8662a587350e2b5ad37342ca1d19a5aeb0e7fe8c/sasview:

Updating basepage and fitpage to pass is_modified flag out of helper functions so that _onDraw can correctly determine that there is a change and recalculate/redraw

Fixes #753 compute button no longer seems to work

[ajj]

In 3bec50ae2f0e34d160b7c5524ce22736baa10388/sasview:

Really fixes #753 (proper call to wx.CallAfter? that works outside if a debugger)

[pkienzle]

Select a model, change Npts to 500 and click "Compute". On the mac nothing happens. Press "Enter" in the Npts field and the theory is updated.

Toggling "Log?" does not trigger a recompute (good), but the after toggling "Log?" the compute button doesn't change anything.

Compute does recognize a change in a parameter value and update accordingly.

[Piotr Rozyczko <rozyczko@…]

In 3f8c7bb979f5ba83ed7142730b80d8a6cd21e8ca/sasview:

Enforce callbacks for the Fitting group box. Fixes #753

[GitHub <noreply@…>]

In 09fdc89a900cc298c3aaa4cd3ef8497a23108a18/sasview:

Merge pull request #18 from SasView?/ticket-753

Enforce callbacks for the Fitting group box. Fixes #753