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/applets/migrations/0002_seed_applets.py

@@ -0,0 +1,29 @@
+from django.db import migrations
+
+
+def seed_applets(apps, schema_editor):
+    Applet = apps.get_model('applets', 'Applet')
+    for slug, name, cols, rows, context in [
+        ('wallet', 'Wallet', 12, 3, 'dashboard'),
+        ('new-list', 'New List', 9, 3, 'dashboard'),
+        ('my-lists', 'My Lists', 3, 3, 'dashboard'),
+        ('username', 'Username', 6, 3, 'dashboard'),
+        ('palette', 'Palette', 6, 3, 'dashboard'),
+        ('new-game', 'New Game', 4, 2, 'gameboard'),
+        ('my-games', 'My Games', 4, 4, 'gameboard'),
+        ('game-kit', 'Game Kit', 4, 2, 'gameboard'),
+    ]:
+        Applet.objects.get_or_create(
+            slug=slug,
+            defaults={'name': name, 'grid_cols': cols, 'grid_rows': rows, 'context': context},
+        )
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ('applets', '0001_initial')
+    ]
+
+    operations = [
+        migrations.RunPython(seed_applets, migrations.RunPython.noop)
+    ]