User Interface Updates

-Use material design icon in action bar
-Use newer sdk
-Update interface
I guess you need to set the action bar now.

As you can see, before your change, we just did:

```java
ActionBar bar = getActionBar
```

my question is basically why didn't you just:
```java
ActionBar bar = getSupportActionBar();
```

I was under the impression that the `getSupportActionBar()` method was just a new way for the support API to access the action bar, but it seems (looking at your `if` code) that you need to first fetch the `Toolbar` component with that `findViewById` call you have there, and then set it, because otherwise:

>I guess null
?