CLC-4311 - Gem Updates - livereload / rails-perftest

https://jira.ets.berkeley.edu/jira/browse/CLC-4311
https://github.com/guard/guard-livereload/compare/v2.3.0...v2.3.1
ttps://github.com/rails/rails-perftest/compare/v0.0.4...v0.0.5