Fixed mistakes of last commit & fixed linebreaks in too long popup content (bnc#894573)

No, it is actually fix in this commit. I mena revert to older state - https://github.com/yast/yast-ntp-client/commit/096fdb26110a8f8531d4303ae0ff34651bbdd077#diff-637cd929308624ec8989c144f1d7b7c6L392