Updated Czech localisation.

qml/pages/PageSettingsStorage.qml

@@ -102,7 +102,7 @@ Item {
                     text: if (messageLifeSpinBox.val() === 0) {
                               qsTr("Messages won't automatically be deleted from the local storage.")
                         } else {
-                              qsTr("Messages will be locally stored for a period of %1 days since their acceptance time. Default is not delete.").arg(messageLifeSpinBox.val())
+                              qsTr("Messages will be locally stored for a period of %1 days since their acceptance time. By default they are not deleted.").arg(messageLifeSpinBox.val())
                         }
                     wrapMode: Text.Wrap
                 }
@@ -129,7 +129,7 @@ Item {
                     text: if (attachLifeSpinBox.val() === 0) {
                               qsTr("Attachments won't be deleted from the local storage as long as the corresponding messages won't be deleted.")
                         } else {
-                              qsTr("Attachments will be locally stored, but no longer than corresponding messages, for a period of %1 days since their download time. Default is like message settings.").arg(attachLifeSpinBox.val())
+                              qsTr("Attachments will be locally stored, but no longer than corresponding messages, for a period of %1 days since their download time. Default value corresponds with message settings.").arg(attachLifeSpinBox.val())
                         }
                     wrapMode: Text.Wrap
                 }