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/structures/MatrixChat.js

@@ -15,7 +15,7 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 
-import q from 'q';
+import Promise from 'bluebird';
 
 import React from 'react';
 import Matrix from "matrix-js-sdk";

src/components/structures/RoomView.js

@@ -22,7 +22,7 @@ limitations under the License.
 
 var React = require("react");
 var ReactDOM = require("react-dom");
-var q = require("q");
+import Promise from 'bluebird';
 var classNames = require("classnames");
 var Matrix = require("matrix-js-sdk");
 import { _t } from '../../languageHandler';

src/components/structures/ScrollPanel.js

@@ -17,7 +17,7 @@ limitations under the License.
 var React = require("react");
 var ReactDOM = require("react-dom");
 var GeminiScrollbar = require('react-gemini-scrollbar');
-var q = require("q");
+import Promise from 'bluebird';
 var KeyCode = require('../../KeyCode');
 
 var DEBUG_SCROLL = false;

src/components/structures/TimelinePanel.js

@@ -17,7 +17,7 @@ limitations under the License.
 
 var React = require('react');
 var ReactDOM = require("react-dom");
-var q = require("q");
+import Promise from 'bluebird';
 
 var Matrix = require("matrix-js-sdk");
 var EventTimeline = Matrix.EventTimeline;

src/components/structures/UserSettings.js

@@ -22,7 +22,7 @@ const PlatformPeg = require("../../PlatformPeg");
 const Modal = require('../../Modal');
 const dis = require("../../dispatcher");
 import sessionStore from '../../stores/SessionStore';
-const q = require('q');
+import Promise from 'bluebird';
 const packageJson = require('../../../package.json');
 const UserSettingsStore = require('../../UserSettingsStore');
 const CallMediaHandler = require('../../CallMediaHandler');

src/components/structures/login/Registration.js

@@ -17,7 +17,7 @@ limitations under the License.
 
 import Matrix from 'matrix-js-sdk';
 
-import q from 'q';
+import Promise from 'bluebird';
 import React from 'react';
 
 import sdk from '../../../index';