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

Localization authors:
- Michal Stanke <mstanke@mozilla.cz>

diox/olympia,bqbn/addons-server,mozilla/olympia,wagnerand/addons-server,psiinon/addons-server,mozilla/addons-server,mozilla/olympia,wagnerand/addons-server,diox/olympia,bqbn/addons-server,diox/olympia,wagnerand/addons-server,mozilla/addons-server,mozilla/olympia,bqbn/addons-server,diox/olympia,mozilla/olympia,eviljeff/olympia,psiinon/addons-server,eviljeff/olympia,psiinon/addons-server,eviljeff/olympia,bqbn/addons-server,eviljeff/olympia,wagnerand/addons-server,psiinon/addons-server,mozilla/addons-server,mozilla/addons-server