additional logging to multiple install requests

git-svn-id: https://plugins.svn.wordpress.org/instantsearch-for-woocommerce/trunk@921091 b8457f37-d9ea-0310-8a92-e5e31aec5664
release 1.0.8

git-svn-id: https://plugins.svn.wordpress.org/instantsearch-for-woocommerce/trunk@921093 b8457f37-d9ea-0310-8a92-e5e31aec5664
release 1.0.8

git-svn-id: https://plugins.svn.wordpress.org/instantsearch-for-woocommerce/trunk@921094 b8457f37-d9ea-0310-8a92-e5e31aec5664