Dropbox uploader fixed

git-svn-id: https://plugins.svn.wordpress.org/iremotewp/trunk@919262 b8457f37-d9ea-0310-8a92-e5e31aec5664
Dropbox uploader updated

git-svn-id: https://plugins.svn.wordpress.org/iremotewp/trunk@919263 b8457f37-d9ea-0310-8a92-e5e31aec5664