#211: display only platforms for which user has access on read
#211: updated ability.rb, refactoring of BuildList model
#211: added specs for BuildList API controller
#211: added specs for BuildList controller, updated ability.rb
Merge branch 'master' into 211-display-only-platforms-for-which-user-has-access-on-read
#211: small refactoring of BuildList model
#211: replaced "->" to "lambda"
Merge pull request #212 from abf/rosa-build:211-display-only-platforms-for-which-user-has-access-on-read
 #211: Display only platforms for which user has access on read.