Add Calendar View

[praveenraam]

• [x] Add calendar icon
• [x] Create a screen
• [x] Function to navigate
• [x] Find the algorithm to implement algorithm calculator
• [x] Add calendar
• [x] Function to get date
• [x] Style the component
• [x] #15
• [x] Write function to show data in that component

[praveenraam]

The calendar View is over and merged to the master branch