Add mem_total to scale overall usage
Remove unused import
Add usage_charts
Add adaptive strategy as default
Use all of templates.xml as a template

In order to workaround the icegrid limitation that a single
`<option/>` element cannot parse whitespace (like ants
`line="..."`), this now generates multiple option elements
into etc/grid/generated.xml and imports that file from
etc/grid/config.xml.
Update tests for new template-logic
Bump permgen when memory is available
Minor adjustments