Removing contentView accessor - fix for keyboard access crash

[becknaum]

No description provided.

[sbooth]

I'm not certain if there are any unintended side effects of the change. I'd prefer a fix where contentView was renamed to popoverContentView and is called explicitly.

[becknaum]

Do you mean making popoverContentView into an exposed property of SFBPopoverWindow to act as a wrapper around contentView?
From my understanding, the contentView setter must be overridden, and the getter cannot be. The contentView getter is not being explicitly called anywhere that I can find.

[sbooth]

I integrated these changes. Thanks!