Update www/ganglia-webfrontend to 3.7.1.
Move config files to standard location.
Make Apache/Nginx compatible (based on mail/rouncube).

Upstream changes follow.

3.7.1
* Fix for auth bypass when using the authentication module
* Fix for a XSS in the view adding interface
* Update JQuery Mobile library to 1.4.5

3.7.0
* Cubism integration
* Ganglia Reporting
* Couple reported XSS issues have been corrected

3.6.2
* Performance improvements
* New clearer heatmaps
* Other minor improvements and fixes

3.5.7
* Required Jquery files were missing from 3.5.6 release.

3.5.6
* Number of fixes to address XSS (Cross Site Scripting) issues
* Enhancement to the host view if use option
  "metric_groups_initially_collapsed". Clicking on metric groups
  dynamically loads images instead of reloading the page
* Fixed mobile view
* Incorporate legend in the selection when doing Inspect graph
* Stacked graph fixes
* Numerous other fixes and enhancements

3.5.2
* Fix for stacked graphs not showing after upgrading to 3.5.1
* Inspect graph now uses AJAX calls to retrieve data which should
  help in situations where users use Basic authentication

3.5.1
* Security advisory
* Support for same hostname being in multiple clusters

3.5.0
* Enable zoom to a selection in Inspect Graph
* Add Jump to Metric group drop down
* Add Timeshift functionality to graphs
* Other misc fixes and improvements

3.4.2
* Improvements to the live dashboard
* Fixed the aggregate graphs metric auto complete which broke in 3.4.1
* Add ability to specify critical and warning thresholds. Use in
  Live Dashboard and Views.
* Minor bug fixes

3.4.1
* Major improvements to Inspect Graph thanks to Peter Piela - deselect
  all data sources, select individual sources, change graph type from
  stack to line and vice versa
* Live Dashboard - integration of Tasseo
* Metrics drop down now includes ability to select optional reports

No changelog could be found for 3.1.3-3.4.0.

(fhajny)