Add .desktop file to install

cardvault/handlers.py

@@ -49,9 +49,9 @@ class Handlers:
                                                               "Importing a library will override your current library. "
                                                               "Proceed?")
             if override_question == Gtk.ResponseType.YES:
-                (library, tags) = util.import_library(dialog.get_filename())
-                self.app.library = library
-                self.app.tags = tags
+                imports = util.import_library(dialog.get_filename())
+                self.app.library = imports[0]
+                self.app.tags = imports[1]
                 # Cause current page to reload with imported data
                 self.app.current_page.emit('show')
                 self.app.unsaved_changes = True

cardvault/resources/cardvault.desktop

@@ -0,0 +1,8 @@
+[Desktop Entry]
+Version=0.5
+Type=Application
+Name=Card Vault
+Comment=Oraganize and plan your MTG card collection
+TryExec=cardvault
+Exec=cardvault %F
+Icon=application-x-executable

cardvault/util.py

@@ -209,7 +209,8 @@ def import_library(path):
         tags = imported["tags"]
     except KeyError as err:
         log("Invalid library format " + str(err), LogLevel.Error)
-        return
+        library = {}
+        tags = {}
 
     log("Library imported", LogLevel.Info)
     return (library, tags)