Display more than one KML on the map. Refs #4

* The currently selected KML in the legend box is now not being removed
from the OpenLayers switcher box when another KML entry is selected
Profile link & picture display on location marker info window

* The popup view was referencing a non-existent media file. Previously,
i.e. before the upgrade, the picture files for display in the info window
had a "_p." before the file extension. This is no longer the case hence
the error. Refs #8 - ready for review and closing