ignore missing target element in renderRawTemplate
ignore missing target element in renderRawTemplate

So that we don't raise exceptions when reloadApp removes everything

Change-Id: Iaebf420222b6763381197be9ebcd5f6d2e359f11
Reviewed-on: http://review.couchbase.org/8268
Tested-by: Aliaksey Kandratsenka <340b8e09ca65cd3fc686427fcfed17e87eaf61e2@gmail.com>
Reviewed-by: Dale Harvey <491ccac09a36ad1e38b698f273b84fd8efc31071@arandomurl.com>
Tested-by: Dale Harvey <491ccac09a36ad1e38b698f273b84fd8efc31071@arandomurl.com>

membase/ns_server,vzasade/ns_server,mschoch/ns_server,ceejatec/ns_server,pavel-blagodov/ns_server,ceejatec/ns_server,mschoch/ns_server,mschoch/ns_server,mschoch/ns_server,membase/ns_server,daverigby/ns_server,ceejatec/ns_server,t3rm1n4l/ns_server,nimishzynga/ns_server,vzasade/ns_server,t3rm1n4l/ns_server,nimishzynga/ns_server,ceejatec/ns_server,nimishzynga/ns_server,nimishzynga/ns_server,daverigby/ns_server,daverigby/ns_server,t3rm1n4l/ns_server,pavel-blagodov/ns_server,t3rm1n4l/ns_server,membase/ns_server,ceejatec/ns_server,ceejatec/ns_server,mschoch/ns_server,pavel-blagodov/ns_server,t3rm1n4l/ns_server,membase/ns_server,mschoch/ns_server,pavel-blagodov/ns_server,nimishzynga/ns_server,nimishzynga/ns_server,vzasade/ns_server,vzasade/ns_server,membase/ns_server,daverigby/ns_server,membase/ns_server,daverigby/ns_server