Removing railties dependency from the app
Adding a new prerelease version to the gem
Fixing prerelease version number
Fixing issue where carousel doesn't show scrolling arrows

When the last element of a list is display: none, the carousel won't
show the right arrow. This is because jQuery reports a left position for
that item of 0 which leads to the carousel thinking it is at its
rightmost limit.
Abstracted the shared functionality between Widget and Addon into a
Shared module.
Renames xooie_helpers -> helpers and updated module
Added additional tests around handler and shared
WIP checkin of keynav code
Added role methods to base.  Also cleaned up tabbing
Fixed a bug where instantiation would fail if there are no addons
Added additional helper methods (tests pending)
Cleaned up tabbing in shared
Updated dropdown widget to be compatable with the new architecture
Enabling dropdown tests
Removing older test specs (will be added with updated modules)
Updating the tab module to use the new architecture
Removed expander, added some documentation to dropdown
Migrated accordion addon to be a proper widget that extends tab.