Besnik,
Sorry it's been so long since I've been back in this list.
Many of these strings are form input labels for the new wiki system. I've put some comments inline.
> Redirect URL for censorship.
When a demo is censored with a DMCA take-down notice, we redirect the demo to a certain url. Only seen by site admins.
> Docs user page
Each user has a docs page that lists their doc activity.
> MDN documents for %s review
> Documents for {tag} review
> Articles in Need of Review Tagged: {tag}
Label given to lists of documents that need a technical, editorial, localization, or other review.
> Submitted Revision Changes
> Revision rendered html:
> Translation rendered html:
Labels for showing wiki changes and pages in preview mode.
> I also need a bit help regarding "tilt orientation" used in a string,
> which I suppose deals with some mobile features.
Yeah, "tilt orientation" means "device orientation" for mobile.
-L