Convert to ARC compliant code.
Add a (blank) GenericViewController.
Use (assign) instead of (weak) in AppDelegate.

There is some problem with NSWindow class that
does not allow to use (weak). According to folks on
StackOverflow, it's possible to use unsafe_unretained,
which is a synonym for assign.
Fix warning: window doesn't fit on screen.

Apparently the way to fix this is to move the
window around in IB and turn on centering
on screen for the main window.
Add last run date to Backend protocol.
Work on viewing profiles (wip).
More messing around with viewing profiles.
Add constraints for split dividers.