CLC-4056: Update Gems: ngannotate-rails / selenium-webdriver / capybara / page-object / webmock
https://jira.ets.berkeley.edu/jira/browse/CLC-4056
Merge pull request #2774 from christianv/CLC-4056

CLC-4056: Update Gems: ngannotate-rails / selenium-webdriver / capybara / page-object / webmock