Pontoon: Update Czech (cs) localization of MDN
Pontoon: Update Czech (cs) localization of MDN

Localization authors:
- Richard Závodný <rickydesign@email.cz>
- Michal Stanke <mstanke@mozilla.cz>

safwanrahman/kuma,Elchi3/kuma,ollie314/kuma,mozilla/kuma,escattone/kuma,yfdyh000/kuma,safwanrahman/kuma,yfdyh000/kuma,yfdyh000/kuma,mozilla/kuma,SphinxKnight/kuma,mozilla/kuma,safwanrahman/kuma,SphinxKnight/kuma,Elchi3/kuma,escattone/kuma,yfdyh000/kuma,safwanrahman/kuma,jwhitlock/kuma,jwhitlock/kuma,a2sheppy/kuma,SphinxKnight/kuma,mozilla/kuma,ollie314/kuma,a2sheppy/kuma,a2sheppy/kuma,ollie314/kuma,ollie314/kuma,safwanrahman/kuma,jwhitlock/kuma,escattone/kuma,SphinxKnight/kuma,ollie314/kuma,yfdyh000/kuma,Elchi3/kuma,a2sheppy/kuma,jwhitlock/kuma,mozilla/kuma,Elchi3/kuma,safwanrahman/kuma,a2sheppy/kuma,ollie314/kuma,Elchi3/kuma,SphinxKnight/kuma,jwhitlock/kuma,SphinxKnight/kuma,yfdyh000/kuma