Remove indentations and new line in jsonp renderer

Before:
http://api3.geo.admin.ch/1413455838/rest/services
http://api3.geo.admin.ch/rest/services/all/MapServer/layersConfig?lang=fr
http://api3.geo.admin.ch/1413455838/rest/services/ech/CatalogServer?lang=fr


After:
http://mf-chsdi3.dev.bgdi.ch/ltteo/rest/services
http://mf-chsdi3.dev.bgdi.ch/ltteo/rest/services/all/MapServer/layersConfig?lang=fr
http://mf-chsdi3.dev.bgdi.ch/ltteo/rest/services/ech/CatalogServer?lang=fr


500kb gained in appcache storage, and files are loaded a little bit faster (~100ms for the LayersConfig)

thx @procrastinatio for your python expertise