If Flexitable was run with init_toggle_on_button_click option set to true, can't destroy

[adammessinger]

In this case, running $('table').flexitable({ destroy: 'toggle' }) does nothing until the column toggle button is clicked and the plugin gets fully initialized. The fault appears to lie in the viewmodel never getting stored with the table if lazy init is used.

[adammessinger]

Fixed by these three commits -- closing.