reroute add person into a group
change button in group
merge origin branch

Merge branch 'master' of https://github.com/cdcueva/oliwi into modify_links
stylize and change link of people and group
merge origin master

Merge branch 'master' of https://github.com/cdcueva/oliwi into modify_links
Merge pull request #91 from cdcueva/modify_links

Modify links