Put licenses into META-INF in plugins

Change-Id: I9a59a3866f553757fbce5739e04b1de2a24da192
Reviewed-on: http://gerrit.dmdirc.com/2018
Automatic-Compile: DMDirc Build Manager
Reviewed-by: Greg Holmes <greg@dmdirc.com>

build.xml

@@ -62,7 +62,7 @@
 
                 <copy todir="${plugins.build.metadata}/${plugin.name}/META-INF">
                     <fileset file="@{configfile}"/>
-                    <fileset dir="${plugin.src.dir}" includes="identities/**"/>
+                    <fileset dir="${plugin.src.dir}" includes="identities/** licences/**"/>
                 </copy>
 
                 <exec executable="git" outputproperty="plugin.lastcommit">