Bot and Feed Reader detection

This PR adds a better detection for bots as well as a new detection for feed readers.
* bots will no longer be detected as operating system 'BOT'
* simulator detection has been removed (will be within bot detection if required later)
* detection for feed readers has been added
* if a feed reader or bot is detected no other data (like OS, Browser,...) will be available
* bots and feed readers have the own .yml detection files containing a bit more information about the bot/feed reader
* introducing some new methods to get detailed information about the detected bot / feed reader
* added possibility to speed up detection of bots/feed readers by discarding their detail information
* added dozens of tests