FIX: Use_hpolib_time_measurement
update plotting scripts

plotting scripts are now more flexible and you can set
linewidth, fontsize, etc.

You can also choose between plotting Mean+-Std or Median+-Quart

See -h option in
  * plotTraceWithStd_perTime.py
  * plotTraceWithStd_perEval.py
  * plotOptimizerOverhead.py
update changelog
Merge branch 'development' of https://github.com/automl/HPOlib into development

Conflicts:
	HPOlib/dispatcher/python_file.py