Vendor the Bootstrap CSS.

Rather than relying on an external path with questionable longevity (the
Bootstrap homepage hosted on GitHub Pages), include the Bootstrap CSS
under the `vendor` directory and require it in the `application.css`.

This also solves the issue of serving up the application layout on SSL
hosts in browsers like Chrome that prohibit the loading of insecure CSS
resources. Since GitHub Pages doesn't provide an SSL host, the layout
can't simply refer to a protocol-relative URL.
Merge pull request #184 from tylerhunt/vendor_bootstrap

Vendor the Bootstrap CSS
Update version to 0.6.5
Raise error if configuration is not set

In case configuration for Doorkeeper was never set then trying to
reach the configuration would result in an error. That way the
users would easily see that they need to add doorkeeper initializer
or change it in order for it to work instead of getting
'undefined_method for nil' errors.
Merge pull request #187 from applicake/missing_configuration

Raise error if configuration is not set
Update version to 0.6.6
Add IDs to the show views for integration testing
Merge pull request #188 from egtann/descriptive_ids

Add IDs to the show views for integration testing
Update version to 0.6.7
Changing table name to be specific in column_names_with_table
Merge pull request #203 from sowawa/master

same problem pullrequest#202 for master branch
Merge remote-tracking branch 'upstream/master'
Updated specs, code and token scope logic