trim category input, resolves #448 (#488)
trim category input, resolves #448 (#488)


enisey14/platform,steemit/steemit.com,TimCliff/steemit.com,GolosChain/tolstoy,TimCliff/steemit.com,GolosChain/tolstoy,GolosChain/tolstoy,TimCliff/steemit.com,steemit/steemit.com,steemit/steemit.com,enisey14/platform