[gtranslator] Use gtksourceview-4

[Daniel Garcia Moreno <danigm src gnome org>]

commit 69a4f7dcad01afb018005516604e696878404a9e
Author: Daniel García Moreno <danigm wadobo com>
Date:   Tue Oct 16 18:31:56 2018 +0200

    Use gtksourceview-4
    
    Close #27

 build-aux/flatpak/org.gnome.Gtranslator.json | 3 +--
 meson.build                                  | 2 +-
 2 files changed, 2 insertions(+), 3 deletions(-)
---
diff --git a/build-aux/flatpak/org.gnome.Gtranslator.json b/build-aux/flatpak/org.gnome.Gtranslator.json
index ed765111..ac6e78c4 100644
--- a/build-aux/flatpak/org.gnome.Gtranslator.json
+++ b/build-aux/flatpak/org.gnome.Gtranslator.json
@@ -66,8 +66,7 @@
             "sources" : [
                 {
                     "type" : "git",
-                    "url" : "https://gitlab.gnome.org/GNOME/gtksourceview.git";,
-                    "branch" : "gnome-3-24"
+                    "url" : "https://gitlab.gnome.org/GNOME/gtksourceview.git";
                 }
             ]
         },
diff --git a/meson.build b/meson.build
index 6e45930f..f9efcdf5 100644
--- a/meson.build
+++ b/meson.build
@@ -117,7 +117,7 @@ gtr_deps = [
   dependency('gsettings-desktop-schemas'),
   dependency('gspell-1', version: '>= 1.2.0'),
   dependency('gthread-2.0', version: '>= 2.13.0'),
-  dependency('gtksourceview-3.0', version: '>= 3.0.0'),
+  dependency('gtksourceview-4', version: '>= 4.0.2'),
   dependency('libxml-2.0', version: '>= 2.4.12'),
   cc.find_library('gettextpo'),
 ]