Move show function to String library and get rid of Prelude library
Revamp the Text library so that there is an explicit Text.Style record

The Style record is needed to allow formatting of text fields!
Merge branch 'dev' into text
Move conversion from colors to CSS to the Color library
Properly import show from the String library
Add a defaultStyle
Expose toTypefaces and toLine for use within the core libraries
Properly refer to the new Color.toCss function
Use Text.leftAligned instead of old Text.text in the runtime
Remove dead code
Rely directly on Native.Show.show when needed
Move all field related stuff to Graphics.Input.Field and add the ability to style fields
Fix typo that caused runtime error with buttons
Merge branch 'text' into dev