Refactoring: Extract the "inlined" test log file from
src/test/scala/name/mikkoostlund/utils/logfetcher/FileTimesExtractorSpecTest.scala
to a separate text file,
"/src/test/resources/name/mikkoostlund/utils/logfetcher/test_log_file.txt".
Bugfix: Changed the regexp for extracting the "hours" from a time stamp,

from "(0[1-9]|[12][0-9]|3[01])" (which erroneously accepts "01"-"31")

to   "(0[0-9]|1[0-9]|2[0-3])"   (which correctly accepts "00"-"23").
Added LogFetcherSpecTest.scala
(src/test/scala/name/mikkoostlund/utils/logfetcher),
a complete "acceptance test" of the entire LogFetcher library. Added
test logfiles, used by LogFetcherSpecTest.scala, in
src/test/resources/name/mikkoostlund/utils/logfetcher.