More efficient flat file list format and various UX improvements (#3)

This is a major upgrade with assorted things included.

- Navigation flows improved, search appears in URL history, cleared when navigating to another folder
- More efficient file list format for faster loads
- Efficient updates, never re-send full root another time (except at connection)
- Large number of watching and filelist updates (inotify issues remain)
- File size coloring
- Fixed ZIP generation random glitches (thread race condition)
- Code refactoring, cleanup, typing fixes
- More tests

Reviewed-on: #3

cista/auth.py

@@ -68,10 +68,10 @@ def verify(request, *, privileged=False):
         if request.ctx.user:
             if request.ctx.user.privileged:
                 return
-            raise Forbidden("Access Forbidden: Only for privileged users")
+            raise Forbidden("Access Forbidden: Only for privileged users", quiet=True)
     elif config.config.public or request.ctx.user:
         return
-    raise Unauthorized("Login required", "cookie")
+    raise Unauthorized("Login required", "cookie", quiet=True)
 
 
 bp = Blueprint("auth")