Achievements System Tweaks for Ren'py 8.2.X

like in steam
the change to popup_animation is not thoroughly tested

(cherry picked from commit f714e482f6bdca4d419eb077eb5b3f500c44ce51)

game/scripts/interface/popup.rpy

@@ -1,7 +1,4 @@
 transform popup_animation(time=4.0, xx=-200):
-    on start:
-        xoffset xx
-    on show:
     xoffset xx
     linear 0.5 xoffset absolute(0)
     pause time

game/scripts/utility/updater.rpy

@@ -211,6 +211,8 @@ init python:
 
                 doll.body.matrix = IdentityMatrix()
 
+            delattr(store, "achievements_dict")
+
         if current > latest:
             raise Exception("Loaded save file is incompatible. (Save Version: {}, Game Version: {})".format(current, latest))
 
@@ -219,8 +221,6 @@ init python:
             setattr(store, "_savecompat", True)
             message = "Have fun!"
 
-            achievements.attempt_repair()
-
             renpy.call_in_new_context("modal_popup", "Update Successful", "\nYour save file has been successfully updated to version {{b}}{}{{/b}}.\n\n{}".format(config.version, message), None, "Hurray!")
 
             renpy.block_rollback()