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TNL-4944

Upgrade nokogiri to address security issues in libxml2

Upgrade nokogiri to address security issues in libxml2 https://github.com/sparklemotion/nokogiri/issues/1473

MA-2419:threadPUT - make 'read' mutually exclusive to other fields

TNL-3818 return thread's last_activity_at in response object for thread endpoints

jia/MA-1815 retrieve count for child comments

Update newrelic plugin.

MA-1930 add thread count in GET

updating nokogiri

Updated specs

Refactored rake tasks

- Creating only the necessary data needed for testing
- Replaced double quotes with single quotes where applicable
- Using expect instead of should

- Creating only the requisite data needed for tests
- Using subject and expect
- Replaced double quotes with single quotes

- Cleaned up quotes
- Using factories to generate seed data
- Moved Elasticsearch functions into helper module

Removed broken rake tasks

These tasks were broken by a previous commit (f959e2ec). Given that no one has complained in over a month, I am removing them.

Added factories and updated specs

-Using factories to generate data
- Using single quotes

Using single quotes

- Using factories to create only the data that is actually needed for the tests
- Replaced double quotes with single quotes
- Fixed spacing
- Consolidated helper methods

- Using factories to create only the data that is actually needed for the tests
- Replaced double quotes with single quotes
- Fixed spacing
- Created helper method, block_post_body, to centralize blocked post logic

Factories will replace spec helper methods created for generating test data. Factories are more flexible than the helpers.

Organized rake tasks into separate files

Each namespace now resides in its own file, instead of cluttering Rakefile.

Added binstubs

These are useful, so I'm not sure why the directory was ignored. The unicorn stub, especially, will aid with deployment. See https://github.com/rbenv/rbenv/wiki/Understanding-binstubs for more information.

Updated spec_helper

- Removed unused init_with_subscriptions
- Fixed spacing issues

removing version data

E0d/update nokogiri