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"; }'
```

test/components/structures/ScrollPanel-test.js

@@ -18,7 +18,7 @@ var React = require('react');
 var ReactDOM = require("react-dom");
 var ReactTestUtils = require('react-addons-test-utils');
 var expect = require('expect');
-var q = require('q');
+import Promise from 'bluebird';
 
 var sdk = require('matrix-react-sdk');
 

test/components/structures/TimelinePanel-test.js

@@ -18,7 +18,7 @@ var React = require('react');
 var ReactDOM = require('react-dom');
 var ReactTestUtils = require('react-addons-test-utils');
 var expect = require('expect');
-var q = require('q');
+import Promise from 'bluebird';
 var sinon = require('sinon');
 
 var jssdk = require('matrix-js-sdk');

test/components/views/dialogs/InteractiveAuthDialog-test.js

@@ -15,7 +15,7 @@ limitations under the License.
 */
 
 import expect from 'expect';
-import q from 'q';
+import Promise from 'bluebird';
 import React from 'react';
 import ReactDOM from 'react-dom';
 import ReactTestUtils from 'react-addons-test-utils';

test/components/views/rooms/MessageComposerInput-test.js

@@ -3,7 +3,7 @@ import ReactTestUtils from 'react-addons-test-utils';
 import ReactDOM from 'react-dom';
 import expect, {createSpy} from 'expect';
 import sinon from 'sinon';
-import Q from 'q';
+import Promise from 'bluebird';
 import * as testUtils from '../../../test-utils';
 import sdk from 'matrix-react-sdk';
 import UserSettingsStore from '../../../../src/UserSettingsStore';