Added settings page

Added logging to a .log file
Fixed Images loosing colour and rotation on thumbnail generation
Added more info to README

gallery/logger.py

@@ -0,0 +1,111 @@
+import logging
+import os
+from datetime import datetime
+
+# Prevent werkzeug from logging
+logging.getLogger('werkzeug').disabled = True
+
+
+class logger:
+    def innit_logger(app):
+        filepath = os.path.join(app.root_path, 'user', 'logs')
+        #filename = f'onlylogs_{datetime.now().strftime("%Y%m%d")}.log'
+        filename = 'only.log'
+
+        if not os.path.isdir(filepath):
+            os.mkdir(filepath)
+
+        logging.basicConfig(
+            filename=os.path.join(filepath, filename),
+            level=logging.INFO,
+            datefmt='%Y-%m-%d %H:%M:%S',
+            format=
+            '%(asctime)s %(levelname)s %(name)s %(threadName)s : %(message)s',
+            encoding='utf-8')
+
+    """
+    Login and Auth error codes
+    --------------------------
+    100: Login
+    101: Login attempt
+    102: Login attempt (password error)
+    103: Logout
+    104: Registration
+    105: Auth error
+
+    Account error codes - User actions
+    ----------------------------------
+    200: Account password reset
+    201: Account email change
+    202: Account delete
+    203: Account error
+
+    Image error codes
+    -----------------
+    300: Image upload
+    301: Image delete
+    302: Image edit
+    303: Image error
+
+    Group error codes
+    -----------------
+    400: Group create
+    401: Group delete
+    402: Group edit
+    403: Group error
+
+    User error codes - Admin actions
+    --------------------------------
+    500: User delete
+    501: User edit
+    502: User ban
+    503: User unban
+    504: User permission change
+    505: User error
+
+    Server and Website errors - Internal
+    ------------------------------------
+    600: Server error
+    601: Server crash
+    602: Website error
+    603: Website crash
+    604: Maintenance
+    605: Startup
+    606: Other
+    621: :3
+    """
+
+    def add(error, message):
+        # Allowed error codes, as listed above
+        log_levels = [
+            100, 101, 102, 103, 104, 105, 200, 201, 202, 203, 300, 301, 302,
+            303, 400, 401, 402, 403, 500, 501, 502, 503, 504, 505
+        ]
+        
+        if error in log_levels:
+            logging.log(logging.INFO, f'[{error}] {message}')
+        else:
+            logging.log(logging.WARN, f'[606] Improper use of error code {error}')
+
+    def server(error, message):
+        log_levels = {
+            600: logging.ERROR,
+            601: logging.CRITICAL,
+            602: logging.ERROR,
+            603: logging.CRITICAL,
+            604: logging.DEBUG,
+            605: logging.DEBUG,
+            606: logging.INFO,
+            621: logging.INFO,
+        }
+
+        if error in log_levels:
+            logging.log(log_levels[error], f'[{error}] {message}')
+        else:
+            logging.log(logging.WARN, f'[606] Invalid error code {error}')
+            
+    def filename():
+        handler = logging.getLogger().handlers[0]
+        filename = handler.baseFilename
+        
+        return filename