New category for pages that need a new photo

[kake]

I've added a new RGL category: Needs New Photo. This is for pages that already have a photo but could do with a new one, usually because the relevant place has been significantly refurbished since our photo was taken, or because our current photo is somewhat low-quality.

Note that "low-quality" is partly in the eye of the beholder, and I don't expect many pages to be added to the category because of this. I'm thinking it will mainly get used for pages where, for example, we only have a night-time shot that doesn't show the frontage very clearly.

I've also updated the photo search to take note of this category.

Any comments or problems, let me know!