preferred item image size for theme, get smallest photo near scale requested

themes can declare preferred image size for images in items, with

   $a->theme_info = array(
    "item_image_size" => 1
   );

0: original, 1:640px, 2:320px

mod/photo.php returns the nearest scaled image near requested one
if it doesn't exists, instead of nothing
Merge pull request #1062 from fabrixxm/item_image_size_per_theme

preferred item image size for theme, get smallest photo near scale reque...
Merge pull request #1065 from annando/master

Refreshing of the network page only when the page is at the beginning
revup
Merge pull request #1066 from tobiasd/revup20140807

revup
Added noscrape feature.
Merge pull request #1067 from Beanow/feature/noscrape

Added noscrape feature.
revup and regenerating the message.po
Merge pull request #1068 from tobiasd/20140810

revup and regenerating the message.po
photo export functions for the api
Merge pull request #1069 from annando/master

Solved (possible) encoding problem, encoding of URLs with GUID
Merge remote-tracking branch 'upstream/master'

Conflicts:
	mod/admin.php