When grafana registers the plugin route, it will do so with:
Plugins: Adding route /public/plugins/grafana-kairosdb-datasource -> /var/lib/grafana/plugins/datasource-plugin-kairosdb
However, the string value for templateURL sends requests to a route of /public/plugins/kairosdb. This pull fixes the templateURL to match the actual route.
When grafana registers the plugin route, it will do so with: Plugins: Adding route /public/plugins/grafana-kairosdb-datasource -> /var/lib/grafana/plugins/datasource-plugin-kairosdb
However, the string value for templateURL sends requests to a route of /public/plugins/kairosdb. This pull fixes the templateURL to match the actual route.