More user-friendly "consent popup"

[martinpopel]

• [x] We don't need to be too intrusive. If users disagree with collecting their texts, we should not ask them again on each reload of the web in the same browser. We should store their decision in the browser's local storage. So there should be three states for this variable: agree, disagree and not-answered-yet.
• [x] After a user click "agree" or "disagree", we could show a message "You can change your decision anytime later in the Settings". This message could automatically disappear after few seconds (in addition to closing it with "OK"). I am not sure if this is a good idea. Opinions are welcome.
• [ ] It seems the consent popup is always in Czech, ie. it is not localized to en/uk according to the browser settings. Am I right? If this is difficult to do, we could just provide a "?" button (with tooltip "More info / Více informací / більше інформації") as a link to the settings page (where the users can select their language and read the consent).

[EbrithilNogare]

Do we really want 3 buttons? now we have two that will never show after first decline

[martinpopel]

Ideally, we want just two buttons, but with the texts localized according to the browser settings. I am afraid that Ukrainian users may not understand the text of the consent and they could misinterpret if as consent with cookies and automatically click "agree". I want to minimize the probability of deceiving the users. My suggestion with the "?" button was meant only as an alternative if detecting the language of the browser is difficult to implement. Another alternative could be adding a "X" button to close the dialog (the result would be the same as clicking "disagree" - but users who do not understand the text may feel better if they "defer" the decision).

[martinpopel]

The first task (don't show the popup again if a user disagrees) is marked as done - I think it used to work on the dev server. But now the popup still shows again (on all servers).