Coapp service engine interface

Interface for CoApp's Service Engine

// sample connection via jscript scripting language
(no sample yet!)

Uses url-encoding syntax for messages (both send and receive):

name-of-message?someparameter=value&someotherparameter=value2

All policies will be found in Computer Configuration\Administrative Templates\Control Panel\CoApp (TODO: verify, unsure)

All policy values will be stored in the registry under HKLM\Software\CoApp\PackageManager\Policies

Name	Default Users	Description
`Connect`	Everyone	Allows access to communicate with the CoApp service
`EnumeratePackages`	Everyone	Allows access to query the system for installed packages
`InstallPackage`	Administrators	Allows a new package to be installed
`UpdatePackage`	Everyone	Allows a newer version of an package that is currently installed to be installed
`RemovePackage`	Administrators	Allows a package to be removed
`ChangeActivePackage`	Administrators	Allows a user to change which version of a package is the active (default) one
`ChangeRequiredState`	Administrators	Allows a user to change whether a given package is required (user requested)
`ChangeBlockedState`	Administrators	Allows a user to change whether a given package is blocked from being upgraded
`EditSystemFeeds`	Administrators	Allows users to edit remembered feeds for the system
`EditSessionFeeds`	Administrators	Allows users to edit remembered feeds for the session

Name
session-started
no-packages-found
found-package
package-details
found-feed
scanning-packages
installing-package
installed-package
failed-install-package
failed-remove-package
require-remote-file
signature-validation
operation-requires-permission
message-argument-error
file-not-found
unknown-package
package-is-blocked
unable-to-recognize-file