change join index, add google group and trello board to the join section
Join buttons.
content change
Merge branch 'v1' of github.com:ciudadanointeligente/home-poplus into v1
add form for volunteering application
Join buttons.
Fix url.
Media queries Join.
Fix volunteers form url.
Merge pull request #3 from ciudadanointeligente/v1

V1 join section with some actions