User a property for `data` in QSPlugin
Add a new and improved plugin updater
Only implement the QSPluginUpdater class(es) in one binary
Plugin Updater eye candy

Plus - pass the whole QSPlugin to the updater (in an NSDict) to simplify the setup process of the window
add a titlebar to the plugin updater
have more fine grained control over plugin update status
add a few unit tests for QSObject
additional URL and e-mail tests
add unit tests for file objects
add tests for combined objects
ignoring pasteboard data for specific apps is handled by the clipboard plugin
Allow icons to be set for objects without handlers

Simply setting an icon in QSTypeDefinitions (Info.plist) will give an object an icon now
Various improvements to handling pasteboard objects

* Give all pasteboard objects IDs
* Put the object pasteboard type in the details
* Add a few new types (RTF)
* Fix up icons for images
* Add the source app name for unknown data objects
* Avoid just naming some objects @"Text"
define an image and name for RTF text
typo
Proportionally scale images up or down in the plugin updater
Plugin updater comments and DRY
Merge branch 'master' into pluginUpdater

Conflicts:
	Quicksilver/Quicksilver.xcodeproj/project.pbxproj
tweak the display of the installed version number
Slight tweaks to improve display of the changes in the plugin updater