Beta (trunk) updates:
* Spelling in error message

git-svn-id: https://plugins.svn.wordpress.org/document-gallery/trunk@876025 b8457f37-d9ea-0310-8a92-e5e31aec5664
Beta (trunk) updates:
* Adding POT file for i18n

git-svn-id: https://plugins.svn.wordpress.org/document-gallery/trunk@876027 b8457f37-d9ea-0310-8a92-e5e31aec5664