correct image size display
new image fields for image archive pages
prevent warning for old images where file_size is not defined
Merge branch 'prod'
correct original dimensions display with swipe gallery
correct ie7 image list hover pictos
i18n
mobile flash
make the possibility to drag&drop files more explicit
show linked docs hierarchy when printing
use em rather than px
picto printing
correctly display 'linked with' warning when document is new AND will be linked with another one
subsummits temp fix

best fix will be provided in hierarchy-hell branch
Merge branch 'master' into prod