Sort Resource tags in alpha order, show previously invited allies, and many awesome refactors

• Fix Docker config by @geppy
• Show previously invited allies by @sansbrina
• Refactor routes by @ludamillion
• Add to Contribute page by @matcha440
• Update rails-i18n, selenium-webdriver, rubocop-rspec
• Fix Rubocop offenses by @gpks
• Add StrategiesHelper tests by @JEscalanteGT
• Refactor MeetingController show specs by @andrezacm
• Mock right Time accessor in MedicationRemindersSpec and refactor MomentsController by @salzig
• Sort tags in alpha order and add missing flow types to Resources widget by @julianguyen