introducing new scss files to the structure
moving layout styles to own file
moved default element styles to own file
moved typography rules into own file
moved sections "Layout styles" and "Blocks" to ddbasic.layout.scss
rearranged include statements
rearranged miscellaneous rules
moved button rules to own file
Fixed imports, renamed layout and updated import order and comments
Merged cleanup into development
Merged styles css and removed layout css