Add latest font-awesome
Consistent CSS ref, put main last (overrides)
Naive glyphicon to font awesome
icon- -> fa-
icon-2x -> fa-2x
[green|red]-glyphicon -> &-icon
fa-ok-sign -> fa-check-circle
fa-remove-sign -> fa-times-circle
fa-edit -> fa-pencil-square-o
fa-envelope-alt -> fa-envelop-o
fa-exclamation-sign -> fa-exclamation-circle
fa-group -> fa-users
fa-ok -> fa-check
fa-plus-sign -> fa-plus-circle
fa-remove -> fa-times
Merge pull request #17 from tlvince/refactor/glyphicon-to-font-awesome

Replace glyphicon with font awesome, closes #113