revert to non broken obtvse and update rails
Custom obtvse overrides for Gist styling

Custom obtvse overrides for Gist styling:
- hide the default gist line numbers and implement css-counter
  based line numbering, accommodating word wraps and perfect fit between
  numbers and lines
- line-height and font-size modified for better presentation of code;
  previously they inherited obtvse styling for post text and presentation
Merge pull request #111 from tarakanbg/master

Custom obtvse overrides for default Gist styling
Refactor #external? method
Merge pull request #113 from sergii/master

Make #external? method more readable
Updated rails so we don't get bitten by the JSON bug.

  CVE-2013-0276
  CVE-2013-0277
  http://weblog.rubyonrails.org/2013/2/11/SEC-ANN-Rails-3-2-12-3-1-11-and-2-3-17-have-been-released/
Merge pull request #118 from jrgifford/securing-rails

Updated rails so we don't get bitten by the JSON bug.
Fixes CVE-2013-1854
Merge pull request #122 from jrgifford/fixing-cve-2013-1854

Fixes CVE-2013-1854
Merge pull request #1 from natew/master

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