added project detail report (#2651)

- avatars via css only
- random colors for entities
- improves print view
- added colors for teams
- added color to tag

assets/sass/variables.scss

@@ -37,6 +37,7 @@ $blue: #0073b7;
 //$maroon: #D81B60;
 //$black: #111;
 $gray-lte: #d2d6de;
+$kimai-default: $gray-lte;
 
 // LAYOUT
 // --------------------------------------------------------