Update roadmap.rb

Raised limit in issue list
fix on group exit
finished and working
partecipants list,
removed old library,
some bugfixes,
change nickname
routes standardization
Merge branch 'patch-2' of https://github.com/mion00/Airesis into side_comments
added press page
fixed email list in invite button
css fix for facebook like plugin
remove solutions
solutions title editable
check notifications on blog view
added number of unranked contributes
better invite email