optimize FIle structure

[Tysonpower]

The ESP can't load data from SD Card and push it to the webui as fast as a normal Webserver or RaspberryPI.

Due to this limitation there should not be to many files in one folder to improve loading times and make it easier to find files in the UI (not scrolling 5 years)

For the News Folder we already implemented sub folders per day to avoid issues and make it faster to find what the User is looking for. This should be implemented as well for all other Datatypes like Wikipedia, Messages, uploads etc.

This needs changes in the ESP Firmware (C software) as well as the closed source carousel Library (also C) to select the correct Folder.

[Tysonpower]

Messages now also use Folders per Day to avoid this issue

[Tysonpower]

only Wikipedia folder still needs changes