replace q method calls with bluebird ones

```
find src test -name '*.js' |
    xargs perl -i -pe 's/q\.(all|defer|reject|delay|try|isFulfilled)\(/Promise.$1(/'
```

src/Lifecycle.js

@@ -236,7 +236,7 @@ function _restoreFromLocalStorage() {
 function _handleRestoreFailure(e) {
     console.log("Unable to restore session", e);
 
-    const def = q.defer();
+    const def = Promise.defer();
     const SessionRestoreErrorDialog =
           sdk.getComponent('views.dialogs.SessionRestoreErrorDialog');