Update Gemfile

Rip out protected_attributes

Use cucumber-rails, not cucumber; selenium; updated version of will_paginate.
Implement strong params
Update markup for debugging
Misc Rails 4 query fixes
Add integration tests for strong params

...along with a few other things. This commit also relocates our Cucumber tests from
features to spec.

Right now, we have to run RAILS_ROOT=/rails/root/directory bundle exec cucumber spec/features/,
but I am going to fix this.
use patch, not put in profile update route
Remove Coverband (which was commented out)

Also remove Redis, because it was installed for Coverband (see
fc92885b8a36dafee490111c02c1bf076f7a6c64)
Merge pull request #469 from sunlightlabs/strong-params

Strong params
[Rails 4] Update committee import
Update some Person scopes for Rails 4
Annotate PersonIdentifier
Comment RollCall#set_party_lines
Update sponsored_bill_stats and expire_cached_bill_fragments rake tasks.

sponsored_bill_stats needed a Rails 4 compatible ActiveRecord query;
expire_cached_bill_fragments needed an array instead of an
ActiveRecord::Relation object.
Merge pull request #471 from sunlightlabs/person-scopes

Update some Person scopes for Rails 4
Specify sentry-raven version: 0.10.1
Merge pull request #472 from sunlightlabs/raven-upgrade

Specify sentry-raven version: 0.10.1
Explicitly send errors to Sentry in :update rake tasks
migration added for augmented notification system + minor refactoring
augmented system in place. working out logic for actual sending of notifications
minor cleanup