fixes test issues
adds maximum 60 days date range for conference and updates translation
converts rvmrc into ruby-version and ruby-gemset files
adds rails_helper to rspec tests
Merge branch 'development' into confdeck-21
Merge branch 'confdeck-21' of github.com:kodgemisi/confdeck into confdeck-21
Merge pull request #4 from kodgemisi/confdeck-21

Confdeck 21