standardize conversion of app

[SySagar]

The current app looks very amateur version. There needs to be an improvement in UI of the app.
The conversion includes :

• Removal of app bar
• Customizing the current Whooby button as per issue replace the existing whooby button with a dynamic button. #12
• Adding a dynamic screen in the main activity as per issue Dynamic screen implementation #14
• Adding screen transitions
• Improvise the feed/input text area