Tab management

[jchaves]

Right now, navigating back through all the history on a given tab will end up closing the app (and losing all the other open tabs)

I'll need to find a way to prevent that

[jchaves]

Latest commits stop the app from closing (losing all other opened tabs) when navigating back history on one of the tabs, if there are other tabs open. Pressing back at that pointjust won't do anything. I was tired of ccidentally closing the app and losing open tabs.

I guess this a pretty weak solution, but I didn't have a lot of time to think what the appropriate behavior should be. Probably close the current tab and focus the... previous one? or any other one, really

I'll revisit this next time I have some more free time