chore(docs & backup): update documentation to v3.0, add database backup script and update gitignore

scripts/test_game.py

@@ -49,6 +49,8 @@ def test_file_structure():
         "js/systems/auth.js",
         "js/systems/feedback.js",
         "js/systems/config.js",
+        "js/systems/casino.js",
+        "js/systems/zombielab.js",
         "configurator/index.html",
         "configurator/css/style.css",
         "configurator/js/configurator.js",
@@ -136,6 +138,10 @@ def test_index_html_integrity():
         ("Bug Report form present", r'id="bugreport-form"'),
         ("Bug Report submit button present", r'id="btn-bug-submit"'),
         ("Bug Report script loaded", r'src="js/systems/feedback.js"'),
+        ("Casino script loaded", r'src="js/systems/casino.js"'),
+        ("ZombieLab script loaded", r'src="js/systems/zombielab.js"'),
+        ("Casino modal dialog present", r'id="casino-modal"'),
+        ("Zombie mutation tab present", r'id="tab-zombies"'),
     ]
 
     for name, pattern in assert_elements: