[web] update icons from icomoon
Summary:
add icons, (long arrow right), edit chat bubble, bug
Test Plan: make sure icons still work correctly
Reviewers: atul, ashoat
Reviewed By: atul, ashoat
Subscribers: ashoat, palys-swm, Adrian, karol-bisztyga
Differential Revision: https://phabricator.ashoat.com/D3071