replace imports of q with bluebird

update `package.json`

```
find src test -name '*.js' |
   xargs perl -i -pe 'if (/require\(.[qQ].\)/) { $_ = "import Promise from '\''bluebird'\'';\n"; }'

find src test -name '*.js' |
   xargs perl -i -pe 'if (/import [qQ]/) { $_ = "import Promise from '\''bluebird'\'';\n"; }'
```

src/components/views/room_settings/AliasSettings.js

@@ -14,7 +14,7 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 
-var q = require("q");
+import Promise from 'bluebird';
 var React = require('react');
 var ObjectUtils = require("../../../ObjectUtils");
 var MatrixClientPeg = require('../../../MatrixClientPeg');

src/components/views/room_settings/ColorSettings.js

@@ -13,7 +13,7 @@ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 See the License for the specific language governing permissions and
 limitations under the License.
 */
-var q = require("q");
+import Promise from 'bluebird';
 var React = require('react');
 
 var sdk = require('../../../index');

src/components/views/room_settings/UrlPreviewSettings.js

@@ -14,7 +14,7 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 
-var q = require("q");
+import Promise from 'bluebird';
 var React = require('react');
 var MatrixClientPeg = require('../../../MatrixClientPeg');
 var sdk = require("../../../index");