* CSS color variables, less bold font weight
- Define color variables for fully saturated colors and apply them where
it made sense
- Add background color helper classes
- Globally reduce bold font weight from 700 to 500
- Remove border from timeline icons
- Unify dropzone styling
- Various border style consolidations
* attempt to fix test
* another attempt at tests
* fix contains
* Frontpage and Heatmap CSS tweaks
- Make heatmap use primary color
- Defined secondary color shades
- Set various blue colors to CSS vars
- Misc tweaks
* remove a useless variable
* remove another useless variable
Co-authored-by: Lauris BH <lauris@nix.lv>