libview: Allow printing to all formats supported by backend

Set output format of EvPrintOperationExport according to the format
requested by user or by capabilities of used backend if there
is only 1 choice.

https://bugzilla.gnome.org/show_bug.cgi?id=724044
libview: Show correct warning when printing

Show that requested format is not supported by printer
if it is not supported.

https://bugzilla.gnome.org/show_bug.cgi?id=724044
Updated Hungarian translation
Fix a crash during the build with introspection enabled

Using GI_SCANNER_DEBUG=save-temps, the temporal files remained.
It has been suggested that calling gtk_style_context_add_provider_for_screen()
should, inside a g_once_init(), be in the class's _init() (not class_init()) hook.

https://bugzilla.gnome.org/show_bug.cgi?id=726812
ev-window: Fix enable caret navigation question message

https://bugzilla.gnome.org/show_bug.cgi?id=727062
thumbnails: Remove extra call to ev_document_get_page_size
doap: update URLs
Mark images as not translatable to keep them off translators radar
l10n: Update Japanese translation
l10n: Update Japanese translation

Fix typo
ev-window: Don't crash when trying to save a copy

We can not free both folder_uri and parent_uri. If parent_uri is
non-NULL then it will point to the same location as folder_uri.
Also, parent_uri is now unused so we can just remove it.

Fallout from 41ce0e16cc3f395766abb239f990dd98c3144001

https://bugzilla.gnome.org/show_bug.cgi?id=727536
Merge branch 'master' of git://git.gnome.org/evince