Creates a new application tree, and adds it to the db.
Alias: addApplicationTree
<Action runat="install"
[undo="false"]
alias="addApplicationTree"
silent="[true/false]"
initialize="[true/false]"
sortOrder="1"
applicationAlias="appAlias"
treeAlias="myTree"
treeTitle="My Tree"
iconOpened="folder_o.gif"
iconClosed="folder.gif"
assemblyName="umbraco"
treeHandlerType="treeClass"
action="alert('you clicked');"/>