mrtg treeview

Change munin sorting to be slightly less annoying

Add a basic sort order to the (unsorted) munin datasource

Add a quick implementation of a munin datasource

Allow overriding the calculated filenames and urls - this will allow a quick hack to add a munin datasource

Allow null x and y size - this allows deletion of the default values

CLEANUP

Add first pass at a javascript indexpage

Identify ourselves in the metadata and add to installation target

Hide non public objects, rename global items to be more obvious

Remove unused code, update output to be purely json