update modules, move markdown requirement and add tutorial caching

WebHostLib/__init__.py

@@ -76,12 +76,14 @@ def register_session():
 
 @app.route('/tutorial')
 @app.route('/tutorial/<string:lang>')
+@cache.memoize(timeout=300)  # update every 300 seconds
 def tutorial(lang='en'):
     try:
-        md_file = open(f'WebHostLib/tutorial/tutorial_{lang}.md', 'r', encoding="utf-8")
+        md_file = open(os.path.join('WebHostLib', 'tutorial', f"tutorial_{lang}.md"), encoding="utf-8-sig")
-        return render_template("tutorial.html", tutorial=markdown.markdown(md_file.read()))
     except FileNotFoundError:
         return render_template("tutorial.html", tutorial='The tutorial is not available in that language yet, sorry.')
+    else:
+        return render_template("tutorial.html", tutorial=markdown.markdown(md_file.read()))
 
 
 @app.route('/seed/<suuid:seed>')

WebHostLib/requirements.txt

@@ -5,3 +5,4 @@ flask-caching>=1.9.0
 Flask-Autoversion>=0.2.0
 Flask-Compress>=1.5.0
 Flask-Limiter>=1.3.1
+markdown>=3.2.2

requirements.txt

@@ -2,7 +2,6 @@ colorama>=0.4.3
 websockets>=8.1
 PyYAML>=5.3.1
 fuzzywuzzy>=0.18.0
-bsdiff4>=1.1.9
+bsdiff4>=1.2.0
-prompt_toolkit>=3.0.5
+prompt_toolkit>=3.0.6
 appdirs>=1.4.4
-markdown>=3.2.2