Implement batch fitting

[adareau]

When several runs are selected, clicking on "FIT" should trigger a batch fitting

[adareau]

Note: there is now a progress bar in the gui, that could be used to monitor the progress of the batch fitting 😃

[quentinmarolleau]

I do not understand the point of the the fitBrowserButton: it seems to be a duplication of the fitButton, and they call the same GUI function.

I suggest to keep it simple and remove it.

[adareau]

The point is that the fit button from the fit panel fitButton is sometimes hidden, whereas the other one is always visible. Also, sometimes you fit after selecting files on the browser, and sometimes after changing fit settings from the fit panel, hence the duplicate.

In the end, there is also a keyboard shortcut "CTRL+F", so I guess this is no big deal if you remove one button.

I would suggest that you leave the button when working on this issue, to avoid interferences. Maybe during the "freeze" of devel, when working on the first 'beta' version, we will have a discussion on the gui layout in parallel with the code cleaning.

[adareau]

implemented in #88