Remove any whitespaces from configlines.

Remove any whitespaces from configlines.

Previously only whitespaces from the begin and end
of a config line has been dropped which cause
troubles if a line contains them between the config
option and the value. (LogLevel = debug)

Now simply all whitespaces will be dropped which solved
those problems.

Signed-off-by: Stefan Schantl <stefan.schantl@ipfire.org>