update FAQ docs

custom vhosts must reside as the master vhost level to avoid GHOST vhost
detection -- /var/aegir/config/server_master/nginx/vhost.d
Issue #360 by pricejn2 - Exclude special --CDN vhosts from daily cleanup.
Latest hotfix added on: Tue Aug 12 11:38:02 PDT 2014
Update and improve docs/FAQ.txt
Commons 2.20
Commons 2.20 has changed its profile name from drupal_commons to commons.
Do not rename the legacy Commons profile name.
Do not rename Commons 3.
Avoid "Is a directory" noise in the log.
add imageapi_optimize binaries

ImageAPI Optimize advdef, advpng, jpegoptim, jpegtran, pngcrush, &
pngquant binaries.
Latest hotfix added on: Tue Aug 12 14:05:57 PDT 2014
Revert "add imageapi_optimize binaries"

This reverts commit 2bd577bf9d0b23448bfcde16925086664ff0d24f.
add imageapi_optimize binaries

ImageAPI Optimize advdef, advpng, jpegoptim, jpegtran, pngcrush, &
pngquant binaries to _BACKEND_ITEMS.
Revert "Revert "add imageapi_optimize binaries""

This reverts commit c6e8235c8c1eb0bb31758d6181afba509716b312.
fix IMG binaries for _BACKEND_ITEMS
Replace drupal_commons with commons globally.
add IMG info
Restaurant 1.0-b2
Latest hotfix added on: Wed Aug 13 05:55:25 PDT 2014
Make firewall management faster with randomized schedule.