fix(hotkeys): Fix the issues with hotkeys (#488)

* wip viewport

* refactoring to do not use dispatch from window

* fixing server active testing

* fix(dependencies): Bump ohif-core to 0.5.5

src/connectedComponents/ConnectedViewerRetrieveStudyData.js

@@ -1,19 +1,19 @@
-import { connect } from 'react-redux';
-import ViewerRetrieveStudyData from './ViewerRetrieveStudyData.js';
+import { connect } from 'react-redux'
+import ViewerRetrieveStudyData from './ViewerRetrieveStudyData.js'
 
-const isActive = (a) => a.active === true;
+const isActive = a => a.active === true
 
 const mapStateToProps = state => {
-    const activeServer = state.servers.servers.find(isActive);
+  const activeServer = state.servers.servers.find(isActive)
 
-    return {
-        server: activeServer,
-    };
-};
+  return {
+    server: activeServer,
+  }
+}
 
 const ConnectedViewerRetrieveStudyData = connect(
-    mapStateToProps,
-    null
-)(ViewerRetrieveStudyData);
+  mapStateToProps,
+  null
+)(ViewerRetrieveStudyData)
 
-export default ConnectedViewerRetrieveStudyData;
+export default ConnectedViewerRetrieveStudyData