This greatly improves loading times and takes some load off the APIs.
* Add generic directory class to also hold item count
* Radiobrowser: Get station count directly from API
* Optionally show broken stations and their count
* Remove minimum station bitrate to not filter away some listings
* Improve code wording
* Log API requests
* use flask for easier url handling and tidyness
* create radio-browser.info and vtuner api classes
* add support for more vtuner logic (logos, info messages, search, buttons, etc.)
* use radio-browser.info index and search
* prepare for python packaging