Add donation link

uberwriter/UberwriterWindow.py

@@ -818,6 +818,9 @@ def load_file(self, filename=None):
     def open_translation(self):
         webbrowser.open("https://poeditor.com/join/project/gxVzFyXb2x")
 
+    def open_donation(self):
+        webbrowser.open("https://liberapay.com/UberWriter/donate")
+
     def open_pandoc_markdown(self, widget, data=None):
         webbrowser.open("http://johnmacfarlane.net/pandoc/README.html#pandocs-markdown")
 
@@ -992,6 +995,7 @@ def finish_initializing(self, builder):  # pylint: disable=E1002
             bbtn = Gtk.MenuButton()
             btn_settings = Gtk.MenuButton()
             btn_settings.props.image = Gtk.Image.new_from_icon_name('emblem-system-symbolic', Gtk.IconSize.BUTTON)
+            #btn_settings.props.use_popover = True
             self.builder.get_object("menu4").detach()
             btn_settings.set_popup(self.builder.get_object("menu4"))
 

uberwriter_lib/AppWindow.py

@@ -126,6 +126,10 @@ def do_startup(self):
         action.connect("activate", self.on_translate)
         self.add_action(action)
 
+        action = Gio.SimpleAction.new("donate", None)
+        action.connect("activate", self.on_donate)
+        self.add_action(action)
+
         action = Gio.SimpleAction.new("quit", None)
         action.connect("activate", self.on_quit)
         self.add_action(action)
@@ -171,12 +175,12 @@ def do_command_line(self, command_line):
     def on_about(self, action, param):
         about_dialog = Gtk.AboutDialog(transient_for=self.window, modal=True)
         about_dialog.set_program_name("Uberwriter")
-        about_dialog.set_version("2.0")
+        about_dialog.set_version("2.0.3")
         about_dialog.set_copyright("Copyright (C) 2018, Wolf Vollprecht")
         about_dialog.set_license_type(Gtk.License.GPL_3_0)
         about_dialog.set_website("Uberwriter website http://uberwriter.github.io/uberwriter")
         about_dialog.set_authors(["Wolf Vollprecht <[email protected]>", 
-                                "Manuel Genovés <[email protected]>"])
+                                  "Manuel Genovés <[email protected]>"])
 
         logo_file = get_media_path("uberwriter.svg")
         logo = GdkPixbuf.Pixbuf.new_from_file(logo_file)
@@ -190,6 +194,9 @@ def on_help(self, action, param):
 
     def on_translate(self, action, param):
         self.window.open_translation()
+
+    def on_donate(self, action, param):
+        self.window.open_donation()
 
     def on_shortcuts(self, action, param):
         builder = get_builder('Shortcuts')