Update wikifont icon in 'More option' menu

@Todo - There is no matching icon in https://www.mediawiki.org/wiki/Design/WikiFont
for the summarize icon, a three-bar icon is used instead

Change-Id: I17eb83bd66cac494e7a08c3957be55b99c96a6a3
Merge "Update wikifont icon in 'More option' menu"