Remove view unloading coding from didReceiveMemoryWarning per Apple’s recommendation.
Squashed 'WLContainerControllers/' changes from 88f143f..4dbd98e

4dbd98e Remove view unloading coding from didReceiveMemoryWarning per Apple’s recommendation.

git-subtree-dir: WLContainerControllers
git-subtree-split: 4dbd98ea4f1523ead883028069c348218ae9e83d
Merge commit 'af4e57d35339c26faee8249d31535cb456479752'