Don't look for a parent if you're the parent

[Link2Twenty]

Allow navigating to contentObjects without crash

[moloko]

@Link2Twenty could you check this hasn't already been resolved by #24

[Link2Twenty]

I don't think #24 fixes this, this patch allows the id to be a contentObject as running findAncestor("contentObjects") on a contentObject returns undefined

[moloko]

@Link2Twenty what version of the adapt framework are you using this with?

[Link2Twenty]

@moloko 4.2.0

[moloko]

it should work OK then as if findAncestor does return undefined, the check on line 99 will cause it to return with no further...

TBH I need to get #24 merged anyway as I know for sure it fixes #23 - and when I do that I'm afraid your PR will be out of date as it's based on code that's going to be very different after the merge.

So it might be best if I release the new version, you test again against that and let me know if there's still a problem?

Apologies for having left that PR unmerged for so long...