add timezone support, tons of CSS and layout improvements, more detailed snapshot admin form info, ability to sort by recently updated, better grid view styling, better table layouts, better dark mode support

archivebox/util.py

@@ -11,7 +11,7 @@ from functools import wraps
 from hashlib import sha256
 from urllib.parse import urlparse, quote, unquote
 from html import escape, unescape
-from datetime import datetime
+from datetime import datetime, timezone
 from dateparser import parse as dateparser
 from requests.exceptions import RequestException, ReadTimeout
 
@@ -51,7 +51,7 @@ htmlencode = lambda s: s and escape(s, quote=True)
 htmldecode = lambda s: s and unescape(s)
 
 short_ts = lambda ts: str(parse_date(ts).timestamp()).split('.')[0]
-ts_to_date = lambda ts: ts and parse_date(ts).strftime('%Y-%m-%d %H:%M')
+ts_to_date_str = lambda ts: ts and parse_date(ts).strftime('%Y-%m-%d %H:%M')
 ts_to_iso = lambda ts: ts and parse_date(ts).isoformat()
 
 
@@ -144,13 +144,17 @@ def parse_date(date: Any) -> Optional[datetime]:
         return None
 
     if isinstance(date, datetime):
+        if date.tzinfo is None:
+            return date.replace(tzinfo=timezone.utc)
+
+        assert date.tzinfo.utcoffset(datetime.now()).seconds == 0, 'Refusing to load a non-UTC date!'
         return date
     
     if isinstance(date, (float, int)):
         date = str(date)
 
     if isinstance(date, str):
-        return dateparser(date)
+        return dateparser(date, settings={'TIMEZONE': 'UTC'}).replace(tzinfo=timezone.utc)
 
     raise ValueError('Tried to parse invalid date! {}'.format(date))