Updated Font Awesome to the latest version
Merge pull request #1698 from AaronKalair/update-font-awesome

Updated Font Awesome to the latest version
Interaction Graph insight bugfix
New insight: Long-lost contacts
Closes #1463, closes #1664
Response Time insight copy fixes
Closes #1670, closes #1700
New link list insight attachment template
Closes #1665, closes #1705
Get 12 followees replied to instead of just 5
Alter prefix for reply spike and word frequency insights
closes #1695, closes #1699