Minor layout improvement

Small layout improvement

New interface, add your own recipes.

Added centimeters for metric users and made Celsius / Fahrenheit button more clear, also some miner layout fixes.

Some small layout fixes, new app icon

Fixed layout for newer models, improved functionality Fahrenheit - Celsius

small layout fix

Added dark mode and some "add your own recipes" improvements

Lots of recipes added.

Major update: 
- More recipes
- Add your own recipes
- Delete recipes you don't like or never use. 
- Improved timer warning system 
- Help & assistance page.

Small timer adjustment and extra warning against overcooking added.

Small layout fix.

Improved timer functionality

Small layout fix