Toshaan Bharvani 655d367954 update events
- add all summit events from 2015
  updated from old website
- update layout with better pointers and bullets
- change colors to be a more contrast for visibility
- update eventdates with from and till
  now able to have multiple dates
  listing is based on from date

Signed-off-by: Toshaan Bharvani <toshaan@vantosh.com>
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list.html update events
single.html update events