URI encoding for Windows OS

@timbl @angelo-v
The following PR in 2017 rejects the use of : | / in POST. I suppose it was to preserve the possibility to use NSS on windows.
https://github.com/solid/node-solid-server/commit/5bba6c931fe0b319b6b350b8338b6e144b0b67fa#diff-98a11be785b8100aab3a553eed0e3656a235f06463d2979fd08bafcdf503abdf

      slug = decodeURIComponent(slug)
      if (slug.match(/\/|\||:/)) {
        throw error(400, 'The name of new file POSTed may not contain : | or /')
      }

Using longChat in chat With Me encounters some problem because this control is not applied on PUT, when creating intermediate folders.
see https://github.com/solid/chat-pane/issues/51

I suppose we need some coherence, what is your position :

1. remove the control in POST
2. add the control in all write functions including PUT PATCH (filename and intermediate containers)

首先检查提交 5bba6c931fe0b319b6b350b8338b6e144b0b67fa 以及 POST、PUT 和 PATCH 的写入路径，然后对比 solid/chat-pane#51 中描述的 longChat 失败。对于 POST、PUT、PATCH、文件名和中间容器，':'、'|' 和 '/' 的处理保持一致，并且所选行为已有文档说明或由相关测试覆盖，即表示完成。