* User Preferences - basic integration
* wip user prefs
* Creating ConnectedHeader
* Removing old UserPreferences
* Reverting studylistwithdata
* Initial hotkeys handler migration
* Setting keys after save
* Getting hotkeys from redux
* Adding windowslevel preset listeners
* Refactoring - moving hotkeys setup to ohif-core-hotkeysUtil
* Using hotkeysUtil method on userPreferences save
* Using context in the user preferences
* Adding redux store into localstorage
* Hotkeys - Fixing onResetToDefaults
* Mmoving from OHIFViewer-react to ohif-viewer
