Improve the experience of creating a password

[mmbotelho]

Problem

At the moment, we don't have rules to create a password - the password field on the Sign Up page accepts pretty much any string we put there. This makes sense for a testing environment but eventually we will need some more robust safety measures.

Solution

• Define which safety measures we want (has to have a special character, has to have a number, etc...);
• Make sure the UI shows these conditions to the user (this NN Group article has some good tips about this);
• Prioritize this - when does it make sense to design and develop this feature?

[taoeffect]

Prioritize this - when does it make sense to design and develop this feature?

Marking this as "Low priority". We can revisit and bump the priority after the prototype is released. Reason: there are just so many other way more critical issues to finish first.