fix(episodes-table): set descriptions to be not null

app/Database/Migrations/2020-06-05-170000_add_episodes.php

@@ -64,11 +64,9 @@ class AddEpisodes extends Migration
             ],
             'description_markdown' => [
                 'type' => 'TEXT',
-                'null' => true,
             ],
             'description_html' => [
                 'type' => 'TEXT',
-                'null' => true,
             ],
             'image_uri' => [
                 'type' => 'VARCHAR',

app/Database/Migrations/2020-06-08-170000_add_analytics_website_by_browser.php

@@ -28,7 +28,6 @@ class AddAnalyticsWebsiteByBrowser extends Migration
                 'type' => 'VARCHAR',
                 'constraint' => 191,
             ],
-
             'hits' => [
                 'type' => 'INT',
                 'unsigned' => true,