new applets app for cross-board usage of Applet() & UserApplet() models; dashboard migrations reset and apps reseeded w. new default specs; core.settings & many tests thru-out suite updated accordingly

src/apps/dashboard/models.py

@@ -36,30 +36,4 @@ class Item(models.Model):
         unique_together = ("list", "text")
 
     def __str__(self):
-        return self.text
-    
-class Applet(models.Model):
-    slug = models.SlugField(unique=True)
-    name = models.CharField(max_length=100)
-    default_visible = models.BooleanField(default=True)
-    grid_cols = models.PositiveSmallIntegerField(default=12)
-    grid_rows = models.PositiveSmallIntegerField(default=3)
-
-    def __str__(self):
-        return self.name
-    
-class UserApplet(models.Model):
-    user = models.ForeignKey(
-        "lyric.User",
-        related_name="user_applets",
-        on_delete=models.CASCADE,
-    )
-    applet = models.ForeignKey(
-        Applet,
-        on_delete=models.CASCADE,
-    )
-    visible = models.BooleanField(default=True)
-
-    class Meta:
-        unique_together = ("user", "applet")
-    
+        return self.text