xfce4-verve-plugin: Update to 1.1.0.

1.1.0 (2015/07/11):
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 * Add the ability to use xfce4-verve-plugin as a smartbookmark plugin
 * Add the ability to direct commands beginning in ! or \ to DuckDuckGo
 * Run commands through shell by default, to allow aliases, variables, etc.
 * Use wordexp to expand directory names (when available), to allow variables, etc.
 * Add an optional label on the left side of the plugin
 * Expand properties window to allow turning the above features on/off
 * Increase maximum width of plugin


(youri)