Upgrade gems

Plus tweak to support now deprecated rspec should syntax
Upgrade to Rails 4.1
:order, :limit, :select and :include are now gone from ActiveRecord!

Use the methods instead
Shore up specs to make sure versions_count really works
Lock the news article when adding a new version

Prevents race conditions with incrementing the version number or
anything like that.
Update web-pager-parser to fix Washington Post parsing