future#get -> Await.result(future)

fixed a bunch of future deprecation warnings. ( the redis ones will be fixed in the redis pull request )

There was one outstanding deprecation warning on [future#isReturn](https://github.com/twitter/util/blob/master/util-core/src/main/scala/com/twitter/util/Future.scala#L521) found in [CachedReadableStore#filteredCache](https://github.com/twitter/storehaus/blob/develop/storehaus-core/src/main/scala/com/twitter/storehaus/CachedReadableStore.scala#L25) but the deprecation warning requests to await the result. It sounded like that would trigger blocking so I let that one be. Not sure of the condition needs to be refactored. I'd like to wait on confirmation that Await.result(_) is what we want before changing that. On the other hand, It looks like [future#isReturn](https://github.com/twitter/util/blob/master/util-core/src/main/scala/com/twitter/util/Future.scala#L521) blocked with a default timeout anyway. I'm open to suggestions there.