Removing old parameter sanitizer
Adding in new devise parameter sanitizer
Adding Tests for new Paramter Sanitizer
Added HTTParty to Gemfile
Added SlackService
Passing in Category and Event Name to Slack
Add Spec for SlackService in Hangouts Controller
Specs for SlackService
Moving over to module from class
Removed unnecesasry spec
Using Non-Persisted Models instead of mocks and doubles
Removed HTTParty in favor of Net::HTTP and using initializer for setting the constant
Introduced configuration files

- Added rails_config, pry-rails and hirb gems
- Updated CustomErrors module to use Settings configuration
- Updated mailer to use Settings configuration
Merge pull request #445 from sampritipanda/user_parameter_sanitizer

User Parameter Sanitizer Fix
Merge pull request #441 from yggie/introduce-config-file

Introduced configuration files
Merge pull request #444 from sampritipanda/slack_hangout

Slack Hangout Notifications
fixed tabs and visitors specs
silenced the output of omniauth performing authentications in specs
silenced expected exception on requesting unexistent page in profile_privacy feature
silenced the output of bulk mailer to console
rspec syntax fix