Update Icons and Text in About Page

[amandahmeng]

Update the icons using the ones attached and update the text using the text below numbered from left to right:
1 - IODA monitors connectivity of global Internet infrastructure and tracks the severity of Internet disruptions, from minor to major outages.
2 - IODA provides data at the country, subnational, and Internet Service Provider / Autonomous System level.
3 - IODA’s alert system automatically tracks abnormal drops in Internet connectivity in near real-time.
4 - Our team of Internet measurement experts are dedicated to finding cutting-edge scientific methods to detect Internet outages and disruptions.
5 - We partner with a variety of data and research organizations to support policy, media, and advocacy work.

[amandahmeng]