Ticket #269: Fix user create/update/delete, fix permission update, reorganize.

extensions/guacamole-auth-mysql/src/main/resources/net/sourceforge/guacamole/net/auth/mysql/dao/UserMapper.xml

@@ -186,6 +186,9 @@
       password_salt)
     values (#{user_id,jdbcType=INTEGER}, #{username,jdbcType=VARCHAR}, #{password_hash,jdbcType=BINARY}, 
       #{password_salt,jdbcType=BINARY})
+    <selectKey keyProperty="user_id" resultType="int" order="AFTER">
+      select last_insert_id();
+    </selectKey>
   </insert>
   <insert id="insertSelective" parameterType="net.sourceforge.guacamole.net.auth.mysql.model.UserWithBLOBs">
     <!--
@@ -329,4 +332,4 @@
     set username = #{username,jdbcType=VARCHAR}
     where user_id = #{user_id,jdbcType=INTEGER}
   </update>
-</mapper>
+</mapper>