new uploader using geoserver importer extension
add kml file type
template block renaming
exclude kml if no dbdatastore
dev story - rework geoserver download and exec

download geonode custom geoserver.war instead of vanilla dist,
download and use empty data dir, use jetty-runner for running
make sure settings value matches actual geoserver url
more template block renaming

this reverses 43af8eef
only check for upload object when dbdatastore
Merge branch 'master' into uploader-clean
Merge pull request #606 from ischneider/uploader-clean

uploader - geoserver importer integration