new paris level buildings sprites
paris level new graphics
viewport reset auto set duration when missing from args
properly resize systems and layers on window reszing
new graphics for 14x14 icons

FIXME to be later replaced by font
resize timeline depending on posts layer instead of stage layer
replaced deperacted calls by new common resizing  Universe.resize() call
new styles for posts divs
removed obsolete rules
usineio level adjusted to new printer graphics
appearance tweaks for paris level
force round pixel offset to prevent antialiasing issues on FF
enforce runners to be constrained by a "bounding element"
force loading splash screen to immediately switch to world view
new constrained runner sprite
removed obsolete site-wait screen now switching directly to world screen
removed sky buildings
new demo articles/posts