Use POST for "mark (all) as read"

[Alkarex]

Only for the global actions affecting many articles.
See #554 (comment) and #570

• Replace the <a> links by corresponding <button formmethod="post"> buttons
• Use POST in the JavaScript too
• Allow only POST in the PHP controller.

[marienfressinaud]

What about links in dropdown menu? Using buttons will break the design and I would like to avoid using CSS to make buttons looking like links.

[Alkarex]

A set of CSS rules for the buttons such as background:transparent; color:inherit; border:none; should be sufficient, so it is not so much, luckily.
Furthermore, the current <a/> links in the menus are a bit abused, since there are almost styled as a button (block element with some centred text and the background changing during hovering).
Semantically, <a/> is also not so appropriate for such an action.
If we do not want to use any CSS at all and keep using <a/> for POSTing, then it is also doable to catch the link and POST with JavaScript, but I would rather avoid that :-/

[marienfressinaud]

Not so easy, but it should work now :)

[marienfressinaud]

Still a problem with #bigMarkAsRead link

[Alkarex]

Good work 👍