Add user recordings script to app.justarrived.se

[buren]

Originally we planed to use Hotjar as discussed in #506, however Hotjar doesn't support single page apps..

Alternatives

• http://usabilitytools.com/
• https://fullstory.com/

[buren]

@camillaryd any experience with any of these tools?

[buren]

Fullstory is very expensive, their cheapest plan is 199$/mon..

Usability tools starts at 19$/mon..