Replace specific versions of oracle with 'oracle'.
Update naming in factory and organisation spec.

Since tag names are now normalized on creation the old non-normalized
name of 'rails' that was used in these tests needs to be changed.
technologies controller gives counts within bounds

The app can now give tag counts within geographic bounds.

GET /technologies/within?sw=44,-76&ne=45,-75
will return json with all the tags in the area and the number:
{\"ruby-on-rails\":1}
Use Ashikawa-core from master.
Add rake task for building/deleting graph.
Update from Webmock 1.17.2 to 1.17.4.
Add basic Arangodb infrastructure.

Adding some custom config parameters to the Rails.configuration object
and using it in an Arango class to connect databases based on the
current Rails.env.
Update rake task to use Arango class.
Update rspec-rails from 2.14.1 to 2.14.2