Update capistrano to 2.14.2.

## 2.14.1 (tentative) / January 10 2013

## 2.14.0 / January 9 2013

* Removed ui.output_cols limit of 80 chars (@aussielunix)
* Added :p4charset variable for Perforce command line (@randyinla)
* Added support for rolling back assets, and removing expired assets (@ndbroadbent)
* Merged in `capistrano_colors` gem, and renamed to 'log_formatters', since it does much more than just colors
  (@ndbroadbent)
* Use more intelligence in setting the :scm variable based on known version control directory names (@czarneckid)
* Remove the deploy:web:{disable, enable} tasks (@carsomyr)
* Group finalize_update shell commands into one command, harden shell calls with #shellescape, and separate arguments
  with -- (@ndbroadbent)

(taca)