fix stuff

[udaycruise2903]

Some unfinieshed task that require help

• Complete information of AS Kiran Kumar (FIX THIS LATER)
  update contact.yml with more email addresses.(optional.)
• add captcha to contactus form
• add option to turn off date, start time and end time in particular posts.
• fix broken images in _activities files.
• change all icons in website.
  add the trackrecord content (optional)
• join-membership links
• fix subscribe-to-us section (FIX THIS LATER)
  ~~ Display the recent updated events(upto 2)~~
• change the image in index page, activities page
• add colloborating organisations section in about us (optional)
• change description information in index page.
• add cname
• change favicon.ico in title (FIX THIS LATER)