build: Bump required GTK+ version

For the new API for handling RTL icons.

https://bugzilla.gnome.org/show_bug.cgi?id=737211
ev-history-action: Use the new support for RTL icons in GtkIconTheme

https://bugzilla.gnome.org/show_bug.cgi?id=737211
ev-toolbar: Use margin-end instead of margin-right

So we not needs to handle RTL margin ourselves.

https://bugzilla.gnome.org/show_bug.cgi?id=737211
Added Friulian translation
Updated for Friulian translation
Updated Latvian translation
build: Bump required GTK+ version to a stable version

Bump to 3.14.0, instead of the unstable version 3.13.x.

https://bugzilla.gnome.org/show_bug.cgi?id=737211
Updated Friulian translation
Updated Kazakh translation
Updates Persian Translations
Update Dutch translation 3.14
Updated Greek translation
release: 3.14.1
Disable toggle-find action for documents not supporting find

https://bugzilla.gnome.org/show_bug.cgi?id=738262
tiff: Handle incorrect 0 resolution found in TIFF files

https://bugzilla.gnome.org/show_bug.cgi?id=646414
Fix runtime critical warning when starting in fullscreen mode

The problem is that when running fullscreen mode we call
ev_window_update_links_model() to update the page action widget of the
fullscreen toolbar, but when running directly in fullscreen mode, this
can happen before the links have been loaded in the sidebar. Since
ev_window_update_links_model() is also called automatically when the
links model property changes, we can simply return early in
ev_window_update_links_model() when the model is NULL and it will be
called again with a valid model when the links job finishes.

https://bugzilla.gnome.org/show_bug.cgi?id=737864
configure.ac: workaround quoting issues

BROWSER_PLUGIN_DIR variable substitution is not portable. In particular
it does not work in dash. Replace it with conditional.

https://bugzilla.gnome.org/show_bug.cgi?id=739226
Change Finnish translation team web page to l10n.gnome.org
Update Aragonese translation
properties-dialog: Use headerbar and improve spacing and borders

https://bugzilla.gnome.org/show_bug.cgi?id=739836