Misc fixes

[kamil4]

This was supposed to be three unrelated fixes but (almost by magic) one of the fixes ended up fixing two bugs, so it's down to two fixes:

• photo.toggleStar wasn't updating the parent album, so toggling the star status in photo view would not be immediately reflected when going back to the parent album. This is a regression from 4.4.0,
• The rotation buttons were being shown for non-editable albums (such as public or shared albums belonging to other users, while not being an admin). This required a larger fix because we were being sloppy with hiding these buttons if the photo was actually a video file and such. Now we unconditionally call view.photo.show when loading a new photo (even if already in photo view, as is the case with previous/next buttons), which ensures that the header buttons are in a well-defined state. This almost accidentally fixed another obscure bug I noticed, where for albums that are not downloadable and have "original" disabled, using previous/next between a video file and an image file would end up showing the "..." menu button for the image file, even though it should be hidden in that case.

[ildyria]

Tested.

[ildyria]

IMHO, this can be merged immediately and then will be released with 4.6.0