Reduce minimal livetime for bandmap entries to 30s (requested by DH5YM)
Fix parsing controllerport (ignore trailing whitespace)
Fix parsing of CONTEST, LOGFILE, KEYER_DEVICE and TELNETHOST

- Use g_strchomp to drop NL and trailing whitespaces from keywords
- simplify with g_strlcpy
Fix parsing of CALL in logcfg.dat

- drop trailing whitespace
- for now keep the trailing NL as a lot of code in other parts of tlf
  rely on that NL cahracter