update concord logo
Revert "add maintenance note"

This reverts commit 18d6fb96b041c2d52a0708cf4a99d00a29513af3.
upgrade testing gems
upgrade rails and other Gemfile.lock updates
added mysql2 by accident
clean up deploy script
update to support newer rake
Merge branch 'development'

we don't need a separate development branch anymore
deploy master branch not development