Update to my DokuWiki CLI Plugin

Applied patches suggested by users of my Command Line Interface (CLI) plugin for DokuWiki. This was my first real experience of distributed development in the open source sense. Thanks to Stephane and Andy for the suggestions: it’s nice to know that my minor contribution has been useful enough to someone that they’ve improved it! The new version of the [plugin](http://wiki.splitbrain.org/plugin:cli) is available here.

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