Downgrade CaskAlreadyInstalledError to a warning

Automatic installs - like thoughtbot's laptop script - fail when we
use Homebrew's onoe method.  Using opoo (to warn) will let the
scripts complete successfully when they try to install packages that
have already been installed.

Test for downgrading AlreadyInstalledError to warning
use "staged" instead of "installed" for Caskroom

refs: #6783
Add Packages v1.1.2
add zap stanza for onepassword
Add Fiery Software Manager.app v2.0.0.15

Download latest at URL.
Manual install probably necessary but may review at later date.
Add Fiery Color Profiler Suite v4.6.2.08

Fiery Color Profiler Suite 4.app is an installer that points to multiple pkgs.
411MB download is moved to Caskroom and is still present after manual install.
TODO: Test installer of individual pkgs.
Update xscreensaver to 5.30

The updater has changed from XScreenSaverUpdater.app to XScreenSaver.updater, which I don't know how to deal with and can't find any documentation about.
Update Cloud to 3.1.0
Merge pull request #6934 from linc01n/cloudapp

Update Cloud to 3.1.0
Updates drobo dashboard to v2.6.3
Add Beyond Compare 4
Merge pull request #6935 from jeroenj/drobo-dashboard-update

Updates drobo dashboard to v2.6.3
Upgrade Sonos.app to latest version.
Merge pull request #6863 from rolandwalker/zap_onepassword

zap stanza for onepassword
Merge pull request #6840 from rolandwalker/doc_stage_vs_install

use "staged" instead of "installed" for Caskroom files in messages
Merge pull request #6937 from vinkla/sonos

Upgrade Sonos.app to latest version.
Merge pull request #6936 from linc01n/beyond-compare-4

Add Beyond Compare 4
Merge pull request #6929 from lachlancooper/patch-1

Update xscreensaver to 5.30
add appcast to iterm2
Update to julia 0.3.2