Most functionality
Move Zoom functions outside of theme picker
Prevent 3D overlapping with menu
Align coords better
Merge branch 'master' into zoomable

* master:
  improve other games display
  doesn't need zsh, maybe
  disable CSS transform 3D isolation on mini boards
  fix perf picker
  HTTP API should always return JSON
  a few UI tweaks & fixes
  abandon AI games quicker
Merge branch 'zoomableBoards' of github.com:ornicar/lila into zoomable

* 'zoomableBoards' of github.com:ornicar/lila:
  Align coords better
  Prevent 3D overlapping with menu
upgrade font icon
remove superfluous DOM and CSS classes
just trailing whitespaces
don't run setZoom on load when zoom == 1
only create themepicker zoom slider when needed
round pixel values to avoid flickering
add zoom icon