fixing bugs

git-svn-id: https://plugins.svn.wordpress.org/bitcoin-currency-converter/trunk@886707 b8457f37-d9ea-0310-8a92-e5e31aec5664
currency fix

git-svn-id: https://plugins.svn.wordpress.org/bitcoin-currency-converter/trunk@886708 b8457f37-d9ea-0310-8a92-e5e31aec5664