move view logic out of proposal model into view helper
directly associate proposal with conference
upgrade gems and get rid of deprecation warnings
add columns for relative number and user id on proposal
add jobs to backfill user id and relative numbers
add conference and user to proposal when created
fix bugs from find by conference year
add tests for proposal
remove link to promote user to reviewer
Merge pull request #26 from awguild/relativeProposalNumbers

Relative proposal numbers