sharing: add a link to the original JS email validator

And clarify the copyright/license for that piece of code.
Updated slovak translation
Updated Norwegian bokmål translation
searchbar: Fix delayed search usage for latest GTK+

And bump the GTK+ requirement to make this work.
Updated Hebrew translation.
Updated Traditional Chinese translation(Hong Kong and Taiwan)
Updated Galician translations
Updated German translation
Added Irish translation
Updated Brazilian Portuguese translation
doap: add Debarshi to the maintainers
selections: Implement the new selection toolbar

Changes from the existing toolbar include:
  + It slides up from the bottom instead of being overlaid.
  + The buttons are labelled with strings instead of icons.
  + The toolbar is always shown irrespective of content selection. We
    don't hide the buttons either. Instead of insensitize them.
  + Using a Gtk.HeaderBar simplifies the layout.

https://bugzilla.gnome.org/show_bug.cgi?id=699910
mainToolbar: Use a "Cancel" button instead of "Done"

https://bugzilla.gnome.org/show_bug.cgi?id=699910
selections: Exit the selection mode when an action has been performed

If the action opens a modal dialog then we only exit the mode when the
"response" from the dialog has been positive.

https://bugzilla.gnome.org/show_bug.cgi?id=699910
build: update to latest libgd
searchbar: update for latest GdTaggedEntryTag API
view: update for new pulse GdMainColumn
documents: fix some uninitialized variable warnings
documents: refactor code to load pixbufs

This is in preparation for switching to cairo surfaces for HiDpi.
utils: create large resolution thumbnails

This is needed for HiDpi support.