[Transifex] Translate locales/en.json in cs

98% of minimum 25% translated source file: 'locales/en.json'
on 'cs'.

Sync of partially translated files: 
untranslated content is included with an empty translation 
or source language content depending on file format

locales/cs.json

@@ -1194,6 +1194,10 @@
     "time.1H": "1 h",
     "time.1D": "1 d",
     "time.1W": "1 týd.",
+    "time.1mo": "1 mo",
+    "time.3mo": "3 mo",
+    "time.6mo": "6 mo",
+    "time.12mo": "12 mo",
     "components.AlertModal.zeusDetected": "ZEUS detekoval následující problémy:",
     "components.AlertModal.highZombieCount": "Vysoký počet zombie kanálů",
     "components.AlertModal.zombieExplainer": "Zombie channels indicate stale data on your downloaded network graph.",