Log Message:
Update capistrano to 2.13.5.

## 2.13.5 (tentative) / October 26 2012

* 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)