* 🎨🔥 do not store settings in config and make settings cache easier available
- remove remembering settings value in theme config
- if we need a cache value, we are asking the settings cache directly
- instead of settings.getSettingSync we use settings.cache.get
- added TODO:
- think about moving the settings cache out of api/settings
- we could create a folder named cache cache/settings
- this settings cache listens on model changes for settings
- decoupling
* 🔥 remove timezone from config
- no need to store in overrides config and in defaults settings
* 🎨 context object helper
- replace config.get('theme') by settings cache
* 🎨 replace config.get('theme') by settings.cache.get
* 🎨 adapt tests
* fixes from comments