ProVoet : 
- Add a shared preference class & use it to store & retrieve preference data
- Handle the group screen UI at the time of skip logged flow
- Implement the skip login API & handle the screen redirection
- Add HTML widget in group detail screen for description text, 
- Add the Facebook login function in the login screen & call the API to login app, 
- Collect the data from the Facebook login & pass it to register the API