added some placeholders to make entering fields easier

git-svn-id: https://plugins.svn.wordpress.org/orbisius-cyberstore/trunk@1009526 b8457f37-d9ea-0310-8a92-e5e31aec5664
* Fixed: invalid hash due to WordPress being installed in a non-standard folder which moved uploads dir somewhere else.
* Fixed: some warninngs were shown when debugging was enabled. Our plugins don't do that. Ever.

* Tested with WP 4


git-svn-id: https://plugins.svn.wordpress.org/orbisius-cyberstore/trunk@1009527 b8457f37-d9ea-0310-8a92-e5e31aec5664