Enhance Events Calendar.

[anistark]

Right now, it works directly on fullcalendar + google calendar script.

Need to add css to make it more intuitive.

Todo

• Feature to read calendar events before rendering.
• Render each type of event in different colors.
• Show a pop-up on clicking on an event with details pulled out form the google calendar.
• Show a button to add to calendar directly on the pop-up.