Image captions are not displayed #18
Description
Steps to reproduce:
- In the web client, upload an image, enter a caption
- Observe that in the web client, the caption and the image are displayed as a single, atomic message.
Expected behavior: Somehow display the image and the caption, either as two messages or a single one, I don't care
Actual behavior: Only a link to the online image appears in the chat window (e.g. https://rocketchat.example.org/file-upload/a1A1a1A1a1A1a1A1a/myimage.jpg), which is only accessible if the web client is logged in, and the caption is lost completely.
