Gem updates, more test specs, addition to Contribute page, and using omniauth-rails_csrf_protection

• Gem updates: capybara, selenium-webdriver, rubocop-performance, google-api-client, groupdate, react_on_rails, activerecord-import, bcrypt, omniauth-google-oauth2, spring, inline_svg, jquery_rails
• Bump omniauth-google-oauth2 by @lphytech
• Add a 5 second delay for the view to render by @bmwachajr
• Expose port 5432 psql container by @lphytech
• Back-end work for being able to upload images to Moments and Strategies editors by @bmwachajr
• Tests for GroupsController by @janessatran
• Tests for GroupsFormHelper by @scw248
• Tests for PusherController by @DamonClark and @janessatran
• Add omniauth-rails_csrf_protection and remove omniauth-rails by @julianguyen
• Tests for GroupsHelper by @kolisnyklera
• Attempt to fix flaky InvitationsController spec by @julianguyen
• Add Valeria Kolisnyk to Contributors by @kolisnyklera