Add read button to stop link previewers breaking, fix xss in notes

[jaydn]

I am forking this but thought I would push the non-contentious changes upstream first
This addresses 1 item of #8

I've also fixed ability to put HTML in the notes as it allows XSS
If you actually want this feel free to undo but for me it was just extra attack surface

Cheers

[osminogin]

Hi! Thanks for your intererest. I will try to bring these changes in as soon as possible.

Part of the improvement work started in the in v2 branch in this repo, but had to be postponed.

[osminogin]

Merged. Thanks!