[#68621044] change active_support gem to activesupport

active_support gem has been yanked from rubygems.
bumped version to 3.2.2
Merge pull request #218 from ke4/68621044_active_support_gem_not_available_anymore

68621044 active support gem not available anymore
Merge branch 'master' of github.com:sanger/lims-api into merge_master_322_into_uat
Merge pull request #219 from ke4/merge_master_322_into_uat

Merge master 322 into uat